Omega Seamaster Diver 300M
White
“Once you try one of their HydroFlex™ sailcloth straps, you may never want to wear anything
else.” -
4.9
|
by 448 customers
Verified Buyers
Blood Moon Edition
Red Strap with Red Stitching
Designed to match the precision of the watch it holds.
Sweat, saltwater, & dust resistant.
Zero break-in time - maximum comfort from day one.
€226,95
Stainless Steel
Black
Complete your setup
SAVE €18,25
€65,70
€83,95
bundle price
Add a deployant clasp with your strap and unlock the bundle price.
Your total
Strap only
Clasp unavailable for this strap size.
€1.234,56
In stock ready to ship
Enjoy free and fast Germany delivery
Ships from inside the Germany. No tariffs.
We cover all import fees, taxes & duties — if you’re ever charged, we pay it or reimburse it in full.
Dimension & Specs
Thickness
Tapers from 5.4mm down to 2.2mmWidth taper:
- 18mm tapers down to 16mm at the clasp end.
- 19mm tapers down to 16mm at the clasp end.
- 20/16mm tapers down to 16mm at the clasp end.
- 20/18mm tapers down to 18mm at the clasp end.
- 21mm tapers down to 18mm at the clasp end.
- 22mm tapers down to 20mm at the clasp end.
- 23mm tapers down to 20mm at the clasp end.
Material:
RubberFully vegan and waterproof
Comes fitted with high quality stainless quick release spring bars
Can be paired with our Loop-Less™ Deployant Clasp (sold separately)
What is Loop-less™?
Loop-less™ is our renowned strap system designed for folding deployant clasps. You set your size once, then simply slip it on and click shut—no extra keepers, no loose ends. Common concerns are security and fit; Loop-less™ covers both:
- Effortless on-off. Slide your wrist in, snap the clasp, and go.
- No bulk. Enjoy a seamless profile under any cuff or sleeve.
- Lock-down confidence. Designed to stay in place through every move.
If you’ve ever battled excess strap loops or tangled keepers, Loop-less™ removes that hassle without compromising safety.
What is HydroFlex™?
HydroFlex™ is our flagship range of rubber straps, featuring a formulation that combines a soft, supple feel with the durability you expect from a high performance strap:
- Zero break-in. It feels supple from day one and never stiffens with wear.
- All-weather resilience. Saltwater, sweat, heat or cold will not compromise its form or function.
- Precision comfort. Curved to your wrist with an embossed finish that breathes and flexes like a fine bracelet.
If you’ve struggled with straps that crack or pinch, HydroFlex™ solves those issues out of the box.
Keep your watches safe on the move.
Endorsed by Industry Leaders.
”Artem’s Hydroflex is the best strap I’ve ever had the chance to sample.”
Jamie Weiss
If you have any questions, you are always welcome to contact us. We'll get back to you as soon as possible, within 24 hours on weekdays.
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FAQ’s
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Contact Us
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Keep It Only If It’s Perfect.
30-Day Fit & Feel Guarantee.
If the colour, fit, or look isn’t perfect, return the strap unworn within 30 days for a full refund or exchange.
2-Year Craftsmanship Warranty.
Covered for 24 months against cracks, delamination, or stitching faults. We’ll repair or replace the strap free of charge.
Our favourite watch pairings.
Tudor Black Bay 58
Brown White
Omega Seamaster
Cosmic Tide
Rolex GMT-Master II Pepsi
Dark Matter
Rolex Explorer II 16570
Lunar Ash
Tudor Pelagos 39
Blood Moon
Omega Speedmaster
Event Horizon
Omega Speedmaster
Solar Flare
Zenith Chronomaster Sport
Titan Dune
Zenith Chronomaster Sport
Orbital Moss
Longines Spirit Zulu Time
Vulcan Clay
Take it from our 30,000+ customers.
Matt H.
"Once it’s strapped on, the sizing is nice. It fits well."
SBGY011 Grand Seiko
Dark Matter
Chin Chuan C.
"It fits really nice and easy…Feels really comfortable right from the start."
Omega Aqua Terra
Blood Moon
Alexander K.
"The quality is excellent. It’s very comfortable."
Omega Seamaster 300m
Nova Light
Caio F.
"Super nice. Gives a whole other characteristic to the watch."
Chirstopher Ward
Dark Matter
Nicholas B.
"I tried this, and I’m really happy. It fits my existing Tag Heuer clasp perfectly."
Tag Heuer Monza Calibre 36
Nebula Dust
The HydroFlex ™ advantage
Compare
HydroFlex™
Others
Instant comfort. Zero "break-in" period
Resistant to cracking & fraying
Fully waterproof (pool & sea)
Customers often compare to OEM level fit & finish
Built for extreme use (i.e. snow, heat, UV, sweat, etc.)
Custom design based on 6+ years of R&D & feedback
Rebranded, copy/imitation strap from Ali Baba, Temu, Etc.
All-day comfort. Lighter, cleaner wrist profile. Built to endure.
Flawless fit. Zero readjustment.
The Loop-less™ clasp locks once for a precise, repeatable fit. no stretching or daily tightening.
Weightless movement, no pressure points.
HydroFlex™ rubber flexes with your wrist, keeping even comfort through every motion.
Endures what ordinary rubber can’t.
Designed to stay flexible, endure the elements and retain its shape over time.
Choose your perfect finish.
Every strap is designed for our precision-engineered deployant clasp, designed for comfort, durability, and integration. Available in classic stainless steel or stealth black.
Engineered comfort. Curved design ensures even pressure on the wrist.
Luxury finish. Brushed surfaces resist scratches and match high-end cases.
Custom feel. Easy to swap and size for your exact preference.
See it on 30,000+ wrists.
"The comfort, luxury feel, durability, and craftsmanship are all truly impressive."
Jaehong K.
Event Horizon Edition
"Let me tell you: incredible strap! Expensive, yes. But man is it quality and super stylish!"
Andrew H.
Solar Flare Edition
"In my opinion, the Loopless Hydroflex Strap is so comfortable I can wear it for days, forgetting I'm wearing it."
Michael A.
Orbital Moss Edition
"Simply one of the best watch straps! They feel smooth, looks elegant and wears very well."
Matthias L.
Titan Dune Edition
"Good quality, Very comfortable. Highly recommended."
Ryan L.
Nova Light Edition
"If you are on the edge about whether to purchase a strap or not, just take the plunge. You won’t be disappointed!"
Markus S.
Cosmic Tide Edition
FAQs
We’ve got answers.
Yes, the clasps are sold separately.
You can add a clasp directly on the product page while selecting your strap options. This ensures the correct clasp size is paired and installed for your strap before dispatch.
We offer clasps separately because some customers prefer flexibility. Some rotate a single clasp across multiple straps, while others may already have a compatible clasp and don’t need an additional one.
Loop-less™ HydroFlex™ straps sit at the top of our range for a reason. They combine premium FKM rubber, a refined Loop-less™ construction, and meticulous finishing that took significantly more time and effort to develop. Months of R&D and prototyping went into refining the final version, with multiple iterations to get the balance of feel, fit, and finish exactly right.
You are not paying for a logo. You are investing in long term comfort, durability, and a strap that feels as considered as the watch it is paired with.
Yes. This strap is available in a variety of lug width sizes (18mm through to 23mm) to suit most major watch brands, and comes fitted with quick-release spring bars for tool-free installation.
Unlike a traditional buckle, the Loop-less™ clasp operates like a bracelet. Once sized, it locks to your wrist perfectly — no excess tail, no re-tightening, no keeper loops.
Yes. Our Loop-less™ straps are compatible with your OEM Omega deployant clasp.
To ensure a correct fit, the clasp size must match the width of the strap at the clasp end, not the lug width.
For example, if your selected strap tapers down to 18mm at the clasp end, you will need an 18mm OEM clasp, even though the lug size of the strap may be 20mm.
Absolutely. Our HydroFlex™ range of straps are designed for optimal comfort, ensuring they flex with your wrist, so you can wear it from desk to dive with no irritation.
Yes. HydroFlex™ is waterproof, salt-proof, and heat resistant. It won’t absorb moisture or crack— built for real use, not just display.
98%would recommend these products
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448 reviews
- VAVALENTIN A.Verified BuyerReviewingLoop-less™ HydroFlex™ | Event Horizon Edition | Black Strap with White StitchingI recommend this productRated 5 out of 5 stars2 days agoIncredible strap that completely changes the feel of the watch
I wanted to share my personal impressions of the Artem HydroFlex (Event Horizon Edition) paired with their Loop-less deployant clasp. I mounted it on my Scurfa Diver One with the orange dial, and the result is absolutely stellar. This strap has elevated the watch to a completely different level.
Here is what impressed me the most after wearing it:
• Perfect feel and balance on the wrist: I went with the 20/18mm size, and it feels absolutely perfect on the arm. The taper down to 18mm makes the watch look much more streamlined and elegant. The weight distribution is spot on; the strap holds the diver securely in place without squeezing, and the watch doesn't slide or spin around my wrist.
• The brilliant "Loop-less" design: This is easily the best feature. There are no awkward tail ends sticking out and no annoying keeper loops that slide around or catch on your clothes. The excess strap tucks neatly underneath the clasp right against the skin. From the outside, the line is clean, seamless, and looks incredibly premium.
• Comfort from second one: I was fully prepared for the typical stiff "break-in" period required by most sailcloth straps, but there is none of that here. Thanks to the hybrid FKM rubber, the strap is super soft and conforms to the shape of the wrist right out of the box. The leaf/grooved pattern on the inside lets the skin breathe, so it doesn't sweat at all.
• The clasp is a work of art: Solid, precisely machined, and snaps shut with a reassuring, high…
Artem Straps4 minutes agoWhat a fantastic review! We especially appreciate how much attention you've paid to the little details, from the comfort and taper to the clean look of the Loop-less™ system. Just one small clarification: HydroFlex™ is made entirely from rubber, with the sailcloth texture embossed into the surface. It's incredibly rewarding to hear that you're enjoying the strap and clasp so much. Thanks for such a thoughtful review and for sharing your watch with us!
- 啟巫啟禎 巫.Verified BuyerReviewingLoop-less™ HydroFlex™ | Nebula Dust Edition | Brown Strap with White StitchingI recommend this productRated 5 out of 5 stars5 days agoWonderful!
Beautiful strap!
- CWChristopher W.TX, United StatesVerified BuyerReviewingLoop-less™ HydroFlex™ | Solar Flare Edition | Orange Strap with Orange StitchingI recommend this productRated 5 out of 5 stars1 week agoGreat addition to my watch.
I ordered this to add to the strap rotation on my Certina DS Super PH2000M. I really enjoyed the titanium braclet and teal strap, but wanted another option. I ordered the standard strap and it fits great. The clasp is easy to adjust and set and is a great quality feeling rubber. I will definitely be ordering more straps from Artem (an all black one for sure). Highly recommend.
- AHArash H.NY, United StatesVerified BuyerReviewingLoop-less™ HydroFlex™ | Dark Matter Edition | Black Strap with Black StitchingRated 3 out of 5 stars1 week agoIt’s good, but just a piece of rubber…
The band is great, no question. Nevertheless, it is 100% plastic/rubber, not a true sailcloth. A fair price for this is at most $100, not more. On top of it, even though I spent over $300 on the clasp and strap, they sent it with USPS! Would have thought they would send with a more reliable shipping company when you pay OVER top dollar for this product.
I wouldn’t be so
Quick to buy from them again, but if I did I would get the cheaper clasp, no need to buy the more expensive version, it’d overkill and totally unnecessary (Unless you’re an Olympic swimmer AND you want to do 100 laps with your watch on)
Artem Straps1 week agoThanks for your feedback, Arash. We're glad to hear you're happy with the strap itself!
Our HydroFlex™ straps feature an embossed sailcloth texture. This is a deliberate design choice that gives them the look of sailcloth while avoiding some of the potential issues associated with woven fabrics, such as fraying.
On the shipping side, your order was delivered via USPS Priority Mail in just two days after dispatch, which we're pleased to see! We've generally found USPS to be a reliable and efficient service for our US customers.
We appreciate you taking the time to share your thoughts and hope you continue enjoying your strap!
- DPDavid P.PUE, MexicoVerified BuyerReviewingLoop-less™ HydroFlex™ | Cosmic Tide Edition | Blue Strap with White StitchingI recommend this productRated 5 out of 5 stars2 weeks agoExactly what I hope for
The strap came in high quality packing and is of exceptional quality - perfectly fitting my JLC. Great customer experience with the team too
Artem Straps2 weeks agoThat's a lovely JLC, David! The Cosmic Tide blue complements it beautifully, and we're delighted the strap lived up to your expectations. It's also great to hear you had such a positive experience with our team. I'll be sure to pass your kind words along.