I generally love Rainbow sandals and have owned several other pairs. But if you want something that will provide good quality and be acceptable for the 90% of people then these are great. 4 S. Whatever sand stuck to them easily brushed off! Definitely keeps your head warm. Sending both back tomorrow. Overall, fantastic. However, my initial impressions:1. The cloths leave my skin soft to the touch with the perfect prepped surface to then apply my favorite nighttime serum. So you may want to keep this in mind when ordering and possibly order a size down, like I did.