Product Material: SiliconeSize: SFoot length 23 cm, foot width 7.5 cm, recommended shoe size 35-37 MFoot length 24 cm, foot width 8 cm, recommended shoe size 38-40 LFoot length 26 cm, foot width 9 cm, recommended shoe size 41-43Color: blue, blackQuantity: 1 pairPackage content: 1 pair * short fins1. Power Fins Handy short training fins for adults and children. Power fins like these are perfect for swimming training (crawl, breaststroke) for competitions. Proven short fins like those of are often used when training for the triathlon. Also for snorkeling on vacation, as it is easy to use. Comfortable seat.2. Training advantages Joint-gentle strengthening and tightening of the leg, gluteal and foot muscles. Incredibly comfortable to wear on land and in the water - without disturbing other swimmers When used in open water, a floating buoy can be useful to be more easily seen by surfers, stand-up paddlers, kite boarders and boats in general. The fins are popular with young men and women in recreational sports for runners, cyclists and all types of endurance sports.3. Ideal for building strength Perfect for swimming clubs where the short fins are recommended for children (boys, girls) as well as adults (women, men). The popular small fins are available in many colors and sizes. Perfect for women, men, girls, boys and adolescents. Regenerative swimming with short fins is popular for cure or rehabilitation because it promotes endurance and muscle building and the comfortable, soft fins are also easy to use for beginners.4. Non-slip concave-convex design Swimming fins have a unique fishtail design of the front paw, a natural correction of the swimming posture. Non-slip concave-convex design on the bottom, safe to use5. Material 100% soft, flexible and hypoallergenic silicone. The fins have a pleasant buoyancy in the water and therefore feel nice and light. Durable, comfortable and without edgesProducts from NIUNIU's store