FINIS Positive Drive Swim Training Fins, Extra Small (XS), Youth Y8-Y13

FINIS Positive Drive Fins let swimmers move between freestyle, backstroke, butterfly, and breaststroke during the same training session. Their compact, elliptical blades add resistance for kick practice without the long blade of a conventional fin, making them useful for individual medley sets. FINIS designed them to help build leg strength, foot speed and ankle flexibility. The asymmetrical blade promotes a natural inward-supination kick, while the closed-toe design helps transfer energy from leg to foot.

Check the fit: This pair is XS, listed by FINIS for US youth shoe sizes Y8–Y13 (EU 31–33). These numbers are shoe sizes, not ages. The fins are new and unused; the original box has visible creases, scuffing, and edge wear, as shown in the photos.

Key Benefits

• Asymmetrical Ellipsoidal Blade: Supports kick training across all four strokes, including breaststroke.
• Ergonomic Foot Pocket: Holds the foot in position during kick sets.
• Adjustable Heel Strap: Secures the fin firmly to the foot while allowing the ankle to flex naturally.
• Closed-Toe Design: Transfers movement from the leg and foot to the blade.

Product Specifications

• Brand: FINIS
• Line / Model: Positive Drive Fins / 2.35.100.03
• Size / Sizing Chart: Size XS (US youth shoe sizes Y8–Y13 / EU 31–33)
• Color: Yellow and Black
• Material: Natural rubber

Wearing the fins

FINIS instructs swimmers to place the wider part of each blade on the outside of the foot. Both fins are molded alike; correct orientation matters. See the FINIS fitting guide before use.

First Sale Doctrine Disclaimer

This item is sold under the First Sale Doctrine (17 U.S.C. § 109(a)). More4less Outlet is an independent reseller and is not affiliated with, endorsed by, or sponsored by FINIS, Inc. All respective trademarks remain the property of their rightful owners.