Vivobarefoot Primus Flow Knit Mens Chocolate Truffle Size:46eu Clean the surface with humid Clean the surface with humid cloth to remove dirt and soles with a baking soda solution toe protection and natural movement Upper Soft Wild Hide chrome free cattle leather with flexible stretch webbing Lining Soft jersey lining made from 100% organic cotton Insole Removable thermal insole with a cosy polyester topper and heat reflective aluminium layer Closure Easy pull on Chelsea boot design with stretchy elastic gussets for independent on and off Materials Chrome free cattle leather upper sock like fit Lining 100% recycled polyester mesh lining with recycled microfiber heel construction Insole No insole for maximum ground feel and sensory connection Closure 100% recycled polyester laces with engineered lace loops for secure lockdown Materials Vegan friendly construction using recycled and synthetic materials Best Use Road running 7g Heel to Toe Drop 0mm Stack Height 6mm (4mm ETPU midsole + 2mm outsole) Midsole 4mm low density ETPU midsole for lightweight cushioning and energy return without sacrificing ground feel Outsole Primus Flow outsole with ultra light TPU construction designed for road running