Piranha Gear Cloth Shin Instep NOT made of "paint covered foam" so they are going to last longer than 6 months and not end up cracking and falling apart Sold in pairs because most people usually end up wanting TWO so we thought that would be a totally cool way to sell them 1/2" thick foam padding that will make it through the washer when they just get way too funky smelling Though the running them through the dryer a lot will kind of cook them after a while; Maybe you should stick with the "air drying" thing for that?