The Cloud is the single layer version of the Cloud Collection, it comes with a soft cushiony top sole and a comfortable 1" polyester strap. You liked it so much we added two more colors! The Low Cloud has a soft cushiony top sole, you sort of melt into, it is embossed with the Rainbow logo on the top sole, and has the single layer arch support. All on our Rainbow non-slip bottom sole. The soft 1" polyester strap is sewn with bonded nylon thread and features our box X toe piece construction. The Original Rainbow woven label is sewn to the right toe.