Point to Point, people with narrow feet buy one size smaller. I read almost all the comments on this purchase and these flip flops are for people with wide feet. Bought a size smaller due to narrow feet. I have size 9US and I buy size 8US. The soul is a comfortable soft cushion and the bottom is a more durable rubber. The bottom strap is a soft cushion but I haven't tried it in the water but I won't because it can smell when wet. It's pure black with adidas lettering on the outside.