With 17 studs per sole, and the wearing comfort we expect from Icebug, these Adak shoes are the correct choice for slippery winter conditions. Icebug's Bugrip studs are pushed just a bit inwards when used on smooth hard surfaces, bringing the sole's rubber in contact as well - this makes them safer on smooth rock, for instance. The Adak is ther right choice for walks on city streets, as well as hikes. Note! The studs damage most flooring materials. The Adak Rewool contains 27% recycled materials and 37% bio-based materials. - Waterproof structure with BUGDRI membrane (the membrane is 50% recycled polyester) - Wide last - Primaloft Bio insulation - Surface material: oiled nubuck leather, made in a gold rated LWG factory - Cuff made of recycled Woolpower Merino wool - 17 carbide studs on both soles - Midsole with EVA foam, containing 20% algae-based BLOOM foam - Fleece liner, 100% recycled polyester, bluesign treated and solution dyed for reduced water usage and chemical load - Detach