Anti slip bottom, socks can be worn together with regular booties for added warmth in very cold water.Magic tape for easily buckle or adjust, good water entering prevention.Not harmful to users, chemical glues not used. Warm, elastic and comfortable to wear.Perfect water sport accessory for protecting your feet from scratch and prick.Healthy barefoot walking and hard to be come off in the water, very sutiable for divers and body surfers.