Made of 90% neoprene + 10% nylon fabric, this diving hood is very durable and can protect your head from underwater things. Wearing this diving cap, the possibly poisonous jellyfish will not easily hurt you when you dive deeper. The 5MM thick sponge has high elasticity, which can better keep the head warm in the water. While enjoying your dive, you may be concerned about getting sunburned on the back of your head and neck. With this diving cap, you don't have to worry Adhesive blind seam technology is used to make it firm and not easy to crack; the head drainage hole can discharge the air bubbles gathered on the top of the head from bottom to top after launching. The inside of the face is treated with light skin, and the comfortable veneer reduces water seepage. Suitable for swimming, surfing, diving and other sports. Material: 90% Neoprene + 10% Nylon Fabric Color: Black Size: M(suitable for head 54-56cm), L(suitable for head 55-57cm), XL(suitable for head 56-58cm), XXL(suitable for head 57-59cm)(optional) Weight: 350g Package List: 1 x Diving Hood