éFully leather grained upper the gorgeous Rio 3225 from Wolky is a upgrade from 3204 models. The amazing black multi coloured trainers features a gorgeous leather upper and a lining. Cushy cork, memory foam and Removable foot bed help your feet to relax and anti-Slip synthetic sole provide enough traction to keep you safe on any surface. In addition the 3 adjustable velcro will make sure your feet stays in the right place all the time.é