Features: Make of Silicone, soft and comfortable, light weights and durability. Sturdys and maintains flexibility. Antislip pattern, highly frictions, stable and not easy to slip. The wide Fins, providing strong power, ensuring good kicking frequency and stable propulsions. Ergonomical, comfortable to wear. Full foot wrap, not easy to come down. Great for both adults and children, these flippers is perfect for swimming, diving training, and water sports. Specifications: Component: Silicone Color: White/Golden/Lake Blue/Green/02 color/Black/01 color Size: 29 to 30/31 to 31.5/34 to 35.5/32 to 33.5/36 to 37/37.50 to 38.5/39 to 41/42 to 43/44 to 45 29 to 30 Size: about 25x12cm/9.84x4.72inch 31 to 31.5 Size: about 25.8x12.2cm/10.16x4.8inch 32 to 33.5 Size: about 29x13.2cm/11.42x5.2inch 34 to 35.5 Size: about 27.5x13cm/10.83x5.12inch 36 to 37 Size: about 31x14.6cm/12.2x5.75inch 37.50 to 38.5 Size: about 32.5x15.50cm/12.8x6.10inch 39 to 41 Size: about 34.5x16.2cm/13.58x6.38inch 42 to 43 Size: about 35.5x17cm/13.98x6.69inch 44 to 45 Size: about 36.5x17cm/14.37x6.69inch Package Includes: 1pair Snorkels Fins note: Please allow 1-2cm errors due to manual measurement, make surely that you not mind before order. Due to difference between different monitors, the picture may not reflect the actual color.