The Rainbow Sandals Single Layer Narrow Strap Men’s Sandals in the Black color way feature a newbuck leather top sole and strap. The strap is double stitched and a nylon toe piece is secured with a box stitch. The single midsole and arch support are triple glued for maximum durability. They also feature a non-skid bottom, cell memory foam and a bonded nylon thread. Rainbow Sandals Single Layer Mens Sandals