KitKat Shorts and ALL Pressure Klothing Booty Shorts are made out of polyester. And It’s very stretchable! These can be worn as shorts with tennis shoes &/Heels or maybe you would like to wear them as underwear for your significant other! Either way they are the hottest shorts to buy for this summer and fall! If your item is back ordered please allow 3 weeks to ship because they have to be made. Thanks! Also take a look at all our other Snack Shorts and Booty Shorts, such as our Aquafina Shorts, Gushers Shorts, Fruity Pebbles Shorts, Caution Shorts, and Crown Royal Shorts!