I own one air-dry rack, which is only for my athletic apparel: sports bras, compression shorts, spandex leggings. I do think that allegedly the wicking and anti-smell materials are supposed to not react well to the high heat of a dryer, plus a lot of the stretchy type fabrics don't do well with that. I kind of figure if I only have enough stuff to fill the rack once per week, it's not that big of a deal, because they can hang until I use them again, if I want.