The sole is made out of 3 layers. Bottom two are rubber and top is a inlay foam bed. The glue between the two layers separated at the two after a couple times wearing the flip flops so they got bumped to house use flip flops. They got some mud on the bottom so I kicked them off outside our back door. When I came back to hose them off the glue between the bottom layers had melted and the layers came apart. $3 old Navy flip flops have better wear. I can say I have other flip flops from this company and they have lasted 5+ years but this pair has nothing but issues. The straps across the top also keep getting gummy dirty. I know that makes no sense and I figured something got on them, nope. I cleaned them off and they did it again. The shoes are just crap. Starting to wonder if they are just knock offs instead of the real deal. I will try to come back and update with a photo later.