Single Layer Arch Premier Nubuck Leather 1" Leather Strap Double Stitched Nylon Toe Piece If any sandal says Rainbow, this is it! This is the Rainbow Sandals staple, the one your kid stole from you because they wanted to be cool - and you still haven't gotten it back yet. This is the Flag Ship! The single layer midsole and arch support is triple glued for maximum durability to our non-slip Rainbow bottom. We finish it off with the Original Rainbow woven label on the right strap, the mark of a genuine Rainbow Sandal.