Vivobarefoot Motus Flex Natural Mens Storm Cloud 42eu and natural movement Outsole Thin and natural movement Outsole Thin 4mm Gobi lifestyle outsole with a signature hexagonal design for flexibility and connection to urban surfaces Upper Rugged Wild Hide upper made from 100% bovine leather that softens and develops character with wear Lining 100% bovine leather Insole Removable 3mm Everyday Cork and recycled polyurethane insole topped with naturally antibacterial cork Closure Classic lace up closure with waxed cotton laces and durable metal eyelets Materials Bovine leather upper and lining or wrap them around the cuff for extra protection from leeches while the thin Specification Details Weight ~270g per shoe in men’s EU 42 UK 8 US 9 Heel to Toe Drop 0mm Stack Height 2