HYDRO. B is a shoe that you can swim in. This water ready trainer is one of the most technical trainers that we have ever made. With an innovative sole design that allows for quick water drainage to a perforated insole and a seamless, knitted upper, the shoe is lightweight, comfortable and made for holidays. Swimmable trainers. Padded mesh uppers & perforated soles designed for quick drainage. O. B brand stripe loop tab. Mixed textile. Manufactured in Portugal. Wipe clean only. Colour: white