Item Type: Swim Fins Material: TPR+PP Product Color: Green Product Weight: Approx. 550-810g / 19.4-28.6oz Package List 2 x Swim Fins 1Reinforced water flow guide hole effectively reduces the water resistance and reduces the strength of the leg muscles during diving and improve diving swimming speed. 2The slipon type fins are soft and nonslip at the bottom, comfortable and not squeezing the bottom of the foot. 3Convex design increases friction, has better antiskid effect, and makes swimming and diving easier. 4Reasonable streamlined distribution of drainage channels can concentrate water pressure and bring greater stability. 5There are dual channels for drainage, which allows faster drainage and less resistance, making it easy to swim under the sea. 6Highly flexible material, flexibility speed up by more than 30%, strong and powerful kicking, you can enjoy the fun of snorkeling