Got these in an attempt to keep new "memory foam" mattress that made me sweat all night with no air circulation because that is what memory foam does. These work really nice--keep you comfortable all night no more sweats! I highly recommend these to anyone having the same issues (or even hot flashes--they work really well for both). Just bear in mind that these will require specific care instructions--cold water gentle and lowest cool setting in dryer so that they continue to work--the heat or bleach will ruin the ability to be moisture wicking. But it's worth it cuz they work really well. Problem solved for foam mattress.