HEYDUDE Wally Mid GripR Boots Easy to step your foot into and snug without having to tie the laces, these Wally Mid shoes have rewritten the book on casual simplicity. The upper is made from heavyweight twill with a synthetic PU heel cap for some added structure. Fastening:Slip On Material Composition:Textile/Textile/Other Materials Heavy weight twill - Textile upper. Elastic laces. PU synthetic heel. striped print lining. PU heel and collar. Easy-on system. Travel ready. Removable foam insole. Lightweight outsole.