Description Thisprofessional swimming fins, made of quality material, are practical and durable for long lasting use.It is nonskid, easy to wear and not easy to fall off. It is the training aid for swimmers of all levels to support and improve their kick. Ergonomicdesign, it can well protect your feet during swimming. Features - Color:Yellow. - Material:Silicone.- Size: 33-35: 14.5cm/5.71inch(Fin Width), 30cm/11.81inch(Shoe Length), 11cm/4.33inch(Sole Length), 9.5cm/3.74inch(Shoe Mouth Length), 6cm/2.36inch(Shoe Mouth Width),6.8cm/2.68inch(Heel Height).- Size: 36-38: 16cm/6.3inch(Fin Width), 32cm/12.6inch(Shoe Length), 12cm/4.72inch(Sole Length), 10.5cm/4.13inch(Shoe Mouth Length), 6.5cm/2.56inch(Shoe Mouth Width), 7cm/2.76inch(Heel Height).- Note: The size sticked to or printed on the shoe or the sole is Chinese size, please refer to the size of the corresponding country and the centimeters in the description or picture.- Adopted of premium material, it is durable and practical.- It is and can be folded freely without damage.- Ergonomically designed, it could well protect the feet against low temperature.- Scientific curve design in line with hydrodynamics helps reduce the water resistance.- Comfortable to wear, feel like a natural extension of the foot to add the speeds and endurance.Packing list: 1 x pair of swimming fins