Nike and Sarah Reinersten create new shoe tech for amputee athletes - photo 1Nike and Sarah Reinersten create new shoe tech for amputee athletes - photo 2Nike and Sarah Reinersten create new shoe tech for amputee athletes - photo 3Nike and Sarah Reinersten create new shoe tech for amputee athletes - photo 4Nike and Sarah Reinersten create new shoe tech for amputee athletes - photo 5