The Rainbow Single Premier Leather Women’s Sandals. 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 havent gotten it back yet. This is the Flag Ship! The single layer premier leather sandal is made with top grade nubuck leather; the top sole is embossed with the Rainbow logo. The 1″ strap, also nubuck leather; is double stitched, and the nylon toe piece is secured with a box X stitch, all using bonded nylon thread. The single layer mid sole 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.