Ideal for rowers, surfers, kayakers, and SUP fanatics, the Signa is Vibram FiverFingers' signature water shoe. Ultra thin, flexible, and lightweight with a women's specific fit, these shoes let you be one with the water and packs easily into your dry bag at the end of your adventure.. . Stretchy polyester mesh upper. Wavegrip compound for incomparable grip on various watersport surfaces. Hook and loop side closure allows for a snug fit. Maximum outsole thickness 3mm for minimalist feel with protection from abrasions. Outsole drainage ports for maximum water shedding. Nonmarking Vibram rubber outsole. Vegan.