Sanuk Women's Yoga Sling 2 Flip Flops - The stretch knit fabric upper brings a unique style and comfort to the traditional flip flop design. Mix in the Happy U sponge rubber outsole and you have a flip flop that maximizes style and comfort. Lightweight, two-way stretch knit fabric upper with sling comfort construction Footbed made from real yoga mat with a sealed edge Happy U sponge rubber outsole Style: SWS10001