Mares X-Stream Bungee Strap Dive Fins
In stock — ships from Irvine, CA
Mares X-Stream Bungee Strap Dive Fins - Black / S (Small) is backordered and will ship as soon as it is back in stock.
Pickup currently unavailable at 23D
Mares Fins Size Chart
Open Heel Fins
Full Foot Fins
Razor / Razor Pro Freediving Foot Pockets
| Foot Pocket Size | EU Shoe Size | US Shoe Size |
|---|---|---|
| 039 | 39/40 | 7/8 |
| 041 | 41/42 | 8.5/9.5 |
| 043 | 43/44 | 10/11 |
| 045 | 45/46 | 11.5/12.5 |
| 047 | 47/48 | 13/14 |
Razor foot pockets are designed to be worn with a 3mm neoprene sock.
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Description
Description
The Mares X-Stream Bungee Strap Dive Fins deliver reliable propulsion for scuba and diving sessions. Blade length ranges from 34.5 to 38 cm depending on size, providing flexible power across different water conditions. The open foot pocket pairs with a low-profile bungee strap for easy on/off and a secure fit. Made from Thermoplastic rubber-Technopolymers, these fins prioritize elasticity to help minimize leg fatigue during extended dives. A Channel Thrust system increases water movement for smooth, efficient propulsion.
Designed with practical, performance-focused features, the X-Stream fins incorporate a newly designed foot pocket with large perforations and energy-absorbing joints, along with a wide central flap that enhances the channelling effect. The tri-material blade construction reduces turbulence, while the Next-generation OPB improves overall fit and control. Channel Thrust technology supports powerful, consistent kicks for divers seeking dependable performance in varied underwater environments.
Features
Features
- Materials: Thermoplastic rubber-Technopolymers
- Blade details: 34.5–38 cm blade length (size-dependent); 750 cm² blade thrust area; 0.7 kg weight per fin
- Design features: Open foot pocket; Bungee strap; Riddled foot pocket to avoid "parachute" effect; Large perforations; Energy-absorbing joints; Wide central flap
- Performance technology: Channel Thrust technology; Tri-material blade construction to reduce turbulence
- Fit and use: Next-generation OPB; suitable for unisex adult sizing and general scuba/diving applications
Specifications
Specifications
| Material | Thermoplastic rubber-Technopolymers |
| Blade length | 37cm / 14.6in (size R) |
| Blade Thrust Area | 750cm² / 116.3in² (size R) |
| Weight of single fin | 0.7kg / 1.5lb (size R) |
| Color Kit | false |
Payment & Security
Payment methods
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WARNING: This product contains chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information, visit www.P65Warnings.ca.gov.
Frequently Asked Questions
What is the difference between open-heel and full-foot fins?
Open-heel fins have an adjustable heel strap and are worn with dive boots, which protect your feet on shore entries and add warmth. Full-foot fins slip on like a shoe against bare skin or a thin sock, and are typically lighter and easier to pack. Most scuba divers choose open-heel fins with boots, while full-foot fins suit warm water, snorkeling, and pool use.
How should scuba fins fit?
Open-heel fins should be sized around the boots you will actually wear, snug with the strap set so your heel stays seated and your foot does not slide forward in the pocket. Full-foot fins should fit like a firm shoe, with no heel lift, no pinched toes, and no gap that lets water pump in and out. Too loose causes heel blisters and lost fins in current, and too tight causes foot cramps.
Should I buy dive boots before fins?
Choose your boots first and size open-heel fins around them, because sole thickness changes the foot-pocket size you need. A thin warm-water boot and a thick cold-water boot with a rugged sole can easily be a fin size apart. If you already own fins, bring them along when you buy boots so you can check the combination.
Are spring straps worth it?
Spring straps replace the adjustable rubber strap with a stainless spring that stretches on and off, so there is nothing to buckle with cold or gloved hands and no rubber strap to perish and snap mid-dive. They hold constant tension, which many divers find more comfortable and consistent. They are sized rather than adjustable, so match the length to your foot pocket and the boots you dive.
What are the best fins for travel?
For travel, length and weight matter most, so shorter blades and travel-specific open-heel or full-foot models pack more easily and save baggage allowance. Some fins have removable blades or compact foot pockets designed for luggage. Pack fins along the outside walls of your bag, where they also act as protection for softer gear.
What is the difference between paddle and split fins?
Paddle fins use a solid blade that transfers power directly, which many divers prefer for precision, control in current, and non-flutter kicks such as the frog kick. Split fins have a slit down the blade that lets water pass through, which generally makes flutter kicking easier on the legs but gives up some control and works less well with other kick styles. Neither is inherently better, so let your kick style, leg strength, and conditions decide, and try both if you get the chance.
How do I care for dive fins?
Rinse them in fresh water after each dive day, paying attention to buckles, springs, and strap channels where salt collects, and dry them out of direct sunlight. Store them flat or hanging from the foot pocket rather than standing on the blade tips, which can take a permanent bend. Check straps, buckles, and any screws before every trip, since a failed buckle is the most common fin problem.
