US W size 10, M size 8 UK size 7 EU size 41 never worn, only tried on. In original box. Upper: PU Leather + Rubber with SUICOKE Waterproof Sherpa Technology Inner: SUICOKE EVA Antibacterial Sole: SUICOKE Original Sole The Suicoke "SHERPA" material comes with a special, waterproof membrane lined on the inside of the upper. The lining has a function that combines excellent waterproof and windproof capabilities.Even in severe weather conditions such as rain and snow, the sherpa system is paired with a lightweight rubber sole to allow you to walk worry-free.