Seac F1 S Scuba Diving Fins
In stock — ships from Irvine, CA
Seac F1 S Scuba Diving Fins - Yellow / XS (X-Small) is backordered and will ship as soon as it is back in stock.
Pickup currently unavailable at 23D

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Product Information
The Seac F1 S Scuba Diving Fins balance performance and comfort for divers, offering a lightweight design suited to extended sessions in scuba and diving scenarios. Weighing only 730 grams, these ultra-light fins reduce fatigue while maintaining propulsion. The square blade profile and reinforced edges provide durability and stability during underwater maneuvers, making them a solid choice in diving gear.
A robust foot pocket and open-heel design pair with an elastic Sling Strap for a stable, secure fit. The non-slip sole with raised rubber inserts adds grip on wet decks and rocky entry points, supporting safety and control under water.
Available in sizes XS to XL (EU 34–48) and multiple colors, the Seac F1 S fins are designed for recreational diving with professional-grade underwater performance.
- ULTRA LIGHT: Seac F1 S diving fins offer excellent performance with minimal weight. Weighing just 730 grams, they enable easy maneuverability while scuba diving and exploring gear-heavy environments.
- ULTRA RESISTANT: The blade’s rigid sections are linked by a flexible technopolymer net, providing high impact resistance and abrasion protection for rugged diving conditions.
- STABLE FIT: Open heel pocket and an elastic Sling Strap offer support and stability, complemented by a non-slip sole with raised rubber inserts for secure wear in wet environments.
- HIGH PERFORMANCE: Tailored for recreational diving, the fins deliver reliable underwater performance with the quality associated with the Seac brand in scuba gear.
- SIZES FROM XS TO XL: Available in multiple colors to fit shoe sizes 34–48 EU, ensuring a comfortable fit for a wide range of divers.
⚠️ 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.



















