The pockets in panties are actually called gussets, which are small pieces of fabric sewn into the crotch of the underwear to provide reinforcement, breathability, and moisture-wicking. The gusset may be sewn closed on both sides or left open on one side, forming a pocket. However, these gussets are not meant for storage. They serve several purposes, such as keeping the underwear drier and more breathable, providing comfort, and cutting down the risk of uncomfortable conditions like yeast infections and urinary tract infections by making your panties more breathable. The extra layer of fabric also helps catch discharge, sweat, and other things, keeping you cool and dry as you go about your day. Synthetic underwear often has an extra layer of cotton inserted as a panty gusset in order to place a layer of breathable fabric right next to your body. The gusset also helps your lady parts breathe, especially since many types of womens panties are made from synthetic materials such as nylon, polyester, spandex, and more, which are not very breathable, unlike cotton.