The fizik winter overshoe a stylish yet rugged overshoe fit for all that british winter riding will throw at you fizik winter overshoe features 100 waterproof and windproof upper 3 layer material with membrane and bonded mesh material panel covering boa or strap closure of shoe stretches to ensure a sleek fit over any shape of cycling shoe height of overshoe ensures no gaps between the bottom of bib tights and the top of the overshoe