Sex Toy Reviews
Latest Reviews
Fantasy Cum Tube Dildo Review
By: Lechery Review's The Knotty List September 20, 2025
Today’s review is all about the Swisok Fenrir cum tube variant, which landed in my paws after snagging the highlight award in Swisok’s latest photo contest. Swisok has been prowling around the fantasy toy scene for almost a decade now, and they’ve earned their spot with bold creature designs, top-tier silicone, and some of the most creative customization options out there.
So, buckle up (or strap on) because we’re about to get very up close and personal with this knotty beast.
Our Prize winning video. using the Swisok Mechknot
a little about the company
Founded in December 2015, Swisok has grown into a well-respected name in the fantasy toy scene, known for its distinctive nautical themes and bold, original designs. Inspired by the golden age of piracy and 18th-century adventure, their toys are infused with a spirit of freedom, exploration, and just the right amount of mischief. From maritime monsters to imaginative anatomy, Swisok toys bring a sense of storytelling and personality to the bedroom.
The brand has made a name for itself with vibrant colors, striking silhouettes, and a clear attention to detail that appeals to both new users and seasoned collectors. Whether you’re into tentacles, unusual textures, or fantasy-forward features, Swisok blends high-concept design with practical usability in a way that feels both playful and indulgent.
Each toy is made in-house from body-safe silicone and offered in a wide range of customizable options: firmness, color, size, and even cum tubes for certain models. Swisok’s commitment to independent development shows in the creativity of their lineup and the quality of the finished product. They don’t follow trends; they sail their own course.
Their motto, “Live Yourself!”, speaks to the brand’s deeper message: embracing your desires, expressing your identity, and exploring pleasure on your own terms. Swisok isn’t just making toys; they’re crafting tools for self-discovery, fantasy, and fun.
Delivery
When the Fenrir arrived, the packaging was straight to the point: discreet, no nonsense, and very “nothing to see here.” Exactly the kind of delivery you want when the box is hiding a knotted beast inside. No loud branding, no awkward conversations at the door, just a quiet little thrill waiting to be unwrapped.
Inside, the first thing that caught my eye was a Swisok-branded storage bag. It definitely looks the part, though the material feels closer to wax paper than a breathable fabric pouch. Not the best for keeping silicone happy long-term, but it does make for a neat collectible. Mine earned a spot on my promo wall immediately. Swisok also tossed in a handful of extras: stickers, a contact card, a 280ml bottle of their branded cum lube, and a keychain of Rex the Lion. I have a soft spot for companies that pack in little surprises; it makes the whole unboxing feel like you’ve stumbled across buried treasure.
And then, nestled at the bottom, sealed in a sleek black-backed bag, was the Fenrir itself. A gorgeous, knotted creature ready for mischief. This one came in medium size with a medium firmness, plus the optional cum tube variant that I couldn’t resist testing. The presentation may be simple, but it set the stage perfectly for what’s clearly going to be one wild ride. Hopefully, down the line, I’ll get to sink my claws into the standard version or even try out different sizes. A fox can dream.
Editor’s Note: No matter where you’re shopping from, always give your toy a proper clean before putting it to use. You never know what release agents or manufacturing residue might be lingering, and a quick wash means peace of mind and safer play. Stay naughty, but stay safe!
Whats In The Box?
1X Swisok Fenrir Cum Tube Dildo
1X 30ml Syringe
1X Plastic Rex The Lion Keychain
2X Swisok Stickers
1X Swisok Contact Card
Measurements
Fenrir comes in the whole pack of sizes, from extra small
all the way up to extra large. So whether you’re curious
and testing the waters or already chasing that “size
enthusiast” badge of honor, Swisok has you covered.
The cum tube option is a little more limited at the
moment, with four listed sizes, even though the promo
shots tease a fifth. For this review, I grabbed the medium.
It’s usually a safe middle ground, big enough to show off
all the sculpted details without being so extreme that only
size fiends can handle it.
In medium, Fenrir stretches out to about eight inches in
total length, with around seven inches that can actually be put to use. The tip is narrow and pointed nicely before flaring out at the base of the head, which hits roughly six inches in circumference. Right after that, the shaft pulls back to about five and a half before swelling again into a shaft and knot that both max out around six, while just above and below the knot, it shrinks back to four and a half inches in circumference. It’s a body built with some serious curves, so expect a bit of stretch along the way.
Detail-wise, the sculpt is textured with subtle veining across the shaft and knot, while the underside of the head
sports a prominent frenum piercing for that extra punch of character. The base anchors the whole thing with a
chunky suction cup measuring about three and a half by three inches and half an inch deep, paired with the cum
tube that sprouts out the top side of the shaft while the whole base is stylized as a set of hefty testicles. It’s the kind
of sculpt that mixes creature flair with functional detail, making every angle feel like it has its own story to tell.
Materials And Maintenance
Swisok uses platinum silicone for all their toys, which is basically the holy grail of toy materials. We’re not talking cheapo food-grade silicone or mystery mixes here. This stuff is the real deal, non-toxic, phthalate-free, hypoallergenic, and gentle on sensitive bits. It's also non-porous, which makes it way easier to clean and much safer in the long run. No risk of bacteria hiding out where it shouldn't. Swisok also proudly displays their SGS and CPST safety certifications on their website, here which is a nice little touch if you, like me, enjoy knowing the stuff you’re putting in your body actually passes real-world safety checks.
Because Swisok toys are made entirely from silicone, it’s completely waterproof. That means you’ve got options. Whether you’re looking for a quiet night in bed or a chaotic underwater encounter in the tub, this toy is game. Platinum silicone is also temperature-play friendly, holding up under heat and cold with a range from -4°C to 200°C. Boiling it? Totally safe. Dishwasher? Go for it. Just keep it off the bottom of the pot if you’re going the stovetop route, unless you want a warped knot and a sad day.
Durability-wise, platinum silicone holds up like a champ. Swisok’s toys don’t break down, don’t get sticky over time, and don’t discolor the way lower-grade toys sometimes do. You can throw a lot at this thing, and it'll still look fresh from the mold. That kind of longevity means you're not just buying a toy, you're adopting a long-term play partner. And if you’re like me and love having a growing collection, it’s nice knowing your older pieces won’t go weird on you in storage.
Cleaning is straightforward for the standard model: warm water, a little antibacterial soap, and maybe a soft toothbrush if you want to get into the nooks. For a deeper clean, a two-to-three-minute boil will do the trick. Always stick to water-based lube only; silicone-on-silicone is a disaster waiting to happen.
If you’ve got the cum tube version, there’s just a bit of extra care involved. Here’s the process that works best:
-
Get your setup ready: a bowl of soapy water, the toy, and the syringe that comes with it.
-
Dip the toy into the solution and draw some of that soapy water into the syringe.
-
Detach the cum tube, slide the syringe into place, and tighten it up.
-
Push the plunger so the soapy water flushes through the tube and out the toy’s tip.
-
Once it’s run through, disassemble the syringe and let both it and the toy soak in clean water for about ten minutes.
-
Repeat the flush with fresh water instead of soap to finish disinfecting everything.
It might sound like a lot written out, but it’s really just a rinse, flush, and repeat situation. The extra effort pays off in keeping the tube squeaky clean, which makes for a much safer (and sexier) experience.
When it comes to the Fenrir Swisok gives you three firmness options to play with: soft, medium, and hard. For this review, I went with medium, since it usually lands in that sweet spot between comfort and intensity. Everything I talk about from here on out comes from testing in that firmness.
In the hand, Swisok’s medium silicone feels plush and springy, the kind of squish you want to squeeze a few times before even putting it to use. It bends easily without feeling flimsy, and with a little pressure, you can fold the whole shaft in half and watch it snap right back into place. There’s a nice balance between give and structure that keeps it body-safe and sensation-packed at the same time.
That balance really shows itself once you hit the knot. Instead of fighting you, the material shifts with your movement, letting you ease into the stretch at your own pace. It’s forgiving without being floppy, which makes a big difference when you’re testing your limits.
One thing I noticed is how even the firmness feels from top to bottom. The details don’t get washed out as you move along, and there aren’t any sudden stiff spots near the base. Every ridge and vein stays in play, while the toy itself flexes just enough to follow your body instead of working against it.
color options
Swisok’s custom pour options are the kind of fun that make my inner gremlin do a happy wiggle. You can pick up to two colors from a sprawling palette of fifty-six and decide exactly how they’ll blend together. Dreamy fade? Swirly marble? A bold, clean split? Have at it. The possibilities are basically endless, whether you’re chasing chaotic rainbow energy or fine-tuned aesthetic perfection.
If picking feels like too much pressure, Swisok’s got you covered with signature pours that already look fantastic. Options like Lust Stripe, Crystal Frost, Iced Peach Tea, and even a glow-in-the-dark version of that last one are all on the menu. At the time we tested, they had just dropped a few new shades too: Midnight Howl, Crimson Bite, and Ember Glow.
For the Cum Tube version of Fenrir, we went with Midnight Howl. That bright royal blue fading into grey was so striking I couldn’t resist. It’s the kind of colorway that practically begs to be shown off.
Cum Tube
For an extra thirty bucks, you can get the Fenrir in a cum tube version instead of the standard model. It’s basically the same toy, just upgraded to let it finish inside you, and it adds a whole new layer to the fantasy. If the thought of a knot releasing into you makes you grin, this is the version worth looking at.
What really works for me is how much it leans into the roleplay side. The release is surprisingly satisfying and takes a toy that already feels powerful and makes it more interactive. There’s also a fun unpredictability; deciding when to squeeze, how much to let out, that keeps things playful instead of routine. It’s cheeky, a little filthy, and definitely makes solo or partner play feel more alive.
The setup’s easy. Swisok includes a 30ml syringe you can load with water-based lube only; since the toy is silicone, that’s the safe option. Warm it up a little if you want the effect to feel more realistic. Push the plunger and the tube running through the shaft releases a flood right when you decide the moment’s right. Personally, I swap in a bigger syringe when I’m in the mood for a messier session, but the starter size works well for teasing or shorter play.
Suction Cup
The medium Fenrir comes with a hefty suction cup base, measuring three and a half inches by three inches, with a half-inch depth that means business. It’s clearly built for hands-free play, so of course I had to put it through my usual torture session. I stuck it onto a ten-pound box using a Solo Saddle and shook it like it owed me money.
The Fenrir clung on like a beast. It handled three solid downward thrusts, ten pounds yanking and pushing on that seal, before it finally gave in and popped free. Not bad at all.
Needless to say, the Fenrir passed the lift test like a champ. It hauled that ten-pound box clean off the ground and held steady like it was nothing. No peeling edges, no slow slide, just pure stubborn grip. For everyday play, that’s a very good sign.
Because I can’t leave well enough alone, I repeated the whole thing multiple times. Same setup, same shaking, same outcome. The suction broke somewhere between the second and fourth shake each round, averaging out around the third, but the lifting strength never budged. That’s not random failure, it’s just physics tapping out after some abuse.
All said, the Fenrir’s suction is rock solid and more than capable of holding up in real-world use.
Testing and Performance
product design 5/5
The veining is subtle but effective, the cheeky little frenum piercing makes me grin every time, and the knot, though not oversized compared to the shaft, still delivers plenty of presence. The hefty base, complete with testicular flair, ties it all together in a way that screams “I’m here to work,” not just sit in a drawer looking pretty.
The suction cup deserves a howl of its own. It’s thick, solid, and feels built for stress-testing. The same goes for the cum tube, it flows seamlessly with the sculpt. That sense of intention is refreshing when you’ve handled enough toys that cut corners. Fenrir has the kind of design that tells you Swisok actually cares about both fantasy and functionality.
And let’s talk color. Midnight Howl, the blue-to-grey pour I tested, looks like storm clouds lit up by moonlight. Gorgeous in photos, stunning in person. You can tell their pour artists enjoy themselves, and it makes the whole thing feel less like “just a dildo” and more like functional art.
easy to use 4/5
For a knotted toy, Fenrir is surprisingly cooperative. The tapered head slips in smoothly, giving you a chance to warm up before the shaft’s swell-and-taper rhythm gets you worked up for the knot. Medium firmness is the sweet spot, it bends with you, but it doesn’t flop around like a wet noodle.
The suction cup is a lifesaver. Plant it down and you’ve got both hands free, whether you’re managing the syringe or just clinging on. It clings stubbornly, which means no mid-thrust peel-offs like I’ve had with other suction cups. That reliability is underrated; you get to stay in the moment instead of babysitting your setup.
The cum tube system itself is simple, but it does come with a learning curve. The syringe included works fine, though a bigger one makes longer, messier sessions easier. My first go was basically a plunger-wrestling match because Swisok’s Cum Lube is thicker than what I normally use. The result? Slow, heavy oozing, hot in its own way; but if you want the sudden “flooded to the brim” feeling, you’ll need to water it down. A 50/50 mix kept enough thickness for realism but let things flow fast enough to hit that climax timing just right.
sensory quality 5/5
Fenrir is an alpha, and you feel it the moment he makes you his. Entry starts with a solid pop, the head alone is six inches around, and from there it’s like riding a subtle rollercoaster. The shaft dips and swells, letting you enjoy that first stretch before building you back up again. It happens not once, but twice before you finally meet the knot. By then you’re fully primed for that last push, and seating yourself on it feels less like insertion and more like being claimed.
The silicone is velvety and works with your body rather than against it. And when you throw the cum tube into the mix? That filling sensation hits like a freight train. The combination of pressure, stretch, and messy release makes it feel like this alpha has dragged you straight into his pack. Drool-worthy is the only way to put it.
easy to clean 3/5
Silicone itself is no trouble. Soap, warm water, toothbrush for the little details, done. You can boil it or toss it in the dishwasher if you’re extra thorough.
The cum tube, though, adds chores. Flushing the syringe with soapy water, rinsing, repeating, it’s not hard, but it’s time-consuming. Skip it, and you risk buildup, which isn’t something you want to discover next session. I keep a rinse bowl handy so it doesn’t feel like a pain, but it’s still more work than a standard dildo. Not a dealbreaker, but if you’re the type who wants “quick rinse and done,” it might test your patience.
pros
-
Gorgeous sculpt with a knot and a shaft that keep things engaging
-
Cum tube adds a whole new level of fantasy play
-
The suction cup base is strong and reliable
-
Wide customization options in size, firmness, and colors
cons
-
Cum tube adds extra cleaning steps
Final Thoughts
Fenrir is one of those toys that doesn’t just sit in the collection and look pretty, it actually earns its keep. From the sculpt to the suction cup to the cum tube, every part of it feels like it was designed with real play in mind. I’ve tested plenty of knotted toys where the knot was either comically oversized or completely useless, but Fenrir hits that sweet spot of giving you a proper stretch without turning it into an endurance trial.
The sensory ride is honestly what sold me. That pointed tip makes the first pop satisfying instead of scary, the shaft’s dips and swells keep your body guessing, and the knot seals the deal with a firm but manageable push. Toss in the cum tube and suddenly you’re not just playing, you’re starring in your own messy, primal fantasy. It’s filthy in the best way, and the control you get over when and how much you release adds a delicious unpredictability to every session.
Medium firmness was the right call for me. Soft would have made the knot too floppy, hard would have pushed it into challenge territory, but medium hit that balance of pressure and comfort where I could enjoy the stretch without feeling like I was wrestling a silicone boulder.
I can’t help but grin every time I spot the cheeky little frenum piercing. Details like that are why Swisok stands out from the pack: they don’t just sculpt monsters, they sculpt characters. Fenrir feels like a personality, not just an object, and that adds a lot to the play experience.
So where does that leave me? Fenrir isn’t a casual fling kind of toy; it’s a commitment piece. You prep for it, you clean up after it, and in between those bookends you get one hell of a ride. If you’re into knotty fantasy play and don’t mind a little extra maintenance for the payoff, Fenrir is the kind of alpha that makes sure you remember your place. And honestly? I’ll happily take that trade every time.
That all being said, the Swisok Fenrir scored 17/20, giving it a rating of 9/10. And I highly recommend this product for those who want a toy that knows how to make you howl.
You can pick up a Fenrir for yourself starting around $40 USD here: https://swisok.com/products/fenrir
or the Cum Tube Variant starting around $110 USD here: https://swisok.com/products/fenrir-with-cum-tube
Use code LECHERYREVIEW978 at checkout to save 10% on your order.
WANT TO BE FEATURED IN OUR NEXT REVIEW?
Whether you're a major player or a budding indie creator, gaining exposure for your products is crucial. We're committed to showcasing a diverse range of Products and styles from both established brands and emerging indie creators.
With our reviews, you'll have the chance to advertise your product to a passionate and engaged audience. Make the most of this opportunity to elevate your brand and expand your reach. Don't hesitate – reach out to us now via social media and let's get your product the attention it deserves!
Twitter / X
Feeling Generous or want to supply us with a product to review? We have a Throne wishlist.
