I bought these flops two years ago because of the great reviews and would never buy them again. The yoga mat material is nice and comfy when you first try them out, but they are not suitable for wearing in any kind of wet environment. The porousness of the material soaks up water like a sponge, causing the shoes to be very slippery and foam up if they get wet. What's worse is that the retained water doesn't dry out easily so the shoes smell funky over time, like old dish sponges. At the beach, the little pores get filled with sand that remains embedded indefinitely. After a year, the shoes looked old and cracked, and so it was time to buy new flip flops.