1.Professional swimming training equipment - Our swimming fins are a fun swimming tool that can enhance the rhythm of leg exercises, enhance leg strength, correct leg movements, fins like fish tails, designed to let swimmers learn to be in the water swimfaster 2. HIGH QUALITY ELASTIC MATERIAL - The Mermaid Swimming Monofin is made of PP material, with unparalleled elasticity, not easy to deform, soft and ultra-light material ensure comfort and avoid chafing during long-term use, allowing you to enjoy swimmingcomfortably and swim faster 3. GREAT DESIGN AND COMFORTABLE EXPERIENCE - Soft foot pockets keep your feet in the swimming monofin for maximum comfort while swimming, other swimming monofins may injure, pinch or rub your feet and create a Natural mermaid moves to help find balanceand build strength in the leg muscles4. EASY ON AND OFF - Easy to put on and take off for easy laces. The center seam keeps the feet in place, every time you use the dolphin legs to swim like a mermaid, you can control your feet well, easy to puton and take off, won't rub your heels, it's a swimming weapon for professional swimmers or general swimmers 5. Swimming Fins for Kids and Adults - Our swim training fins have a professional rating for kids, allowing you to surf against the waves whileenjoying a romantic ocean trip. The new mermaid tail fin design increases the fun of children's water sports, it is a good gift for girls, can transform into a mermaid, help to find balance and exercise the strength of leg muscles quantity of delivery:1 piece (Package contents: Only the above package contents, excluding other products.) size:46x49.5cm (Reminder: The size is measured manually, please allow 1-2 cm measurement error) color:black color (Due to different monitors and lighting effects, the actual color of the item may be slightly different from the color shown on the picture.)