These are a bit smaller than I need, but not enough that I can’t use them. I just have very long thick hair. I use them in the shower, as I only wash my hair every other day. On the days I don’t wash it, these work as completely waterproof. The outer lining is a soft silk and allows air flow so I also don’t get sweaty underneath. The inner liner is waterproof but is also a soft satin feel. Excellent, quality elastic that holds my hair in. I love having a pack of 3. One is kept with my luggage when I travel, so I have a dry one. I use one for a week and then wash it, so I have then have a spare one while it’s being washed. I do put it in a lingerie bag for safety and it came through the washer and dryer just fine. Excellent price for a quality purchase.