PRODUCT DESCRIPTION Our patent pending TempSync Hipster is the world's first thermoregulating undies. Fabric is infused with natural minerals to actively balance body temperature before you get hot. Perfect for staying cool through menopausal hot flashes.  Better than breathable underwear, the innovative 37.5® Tech fabric is infused with natural minerals to actively balance body temperature before you get hot. This is the best cooling underwear for hot flashes and begins working before you ever start to sweat. The first-ever intimates collection featuring 37.5® Tech, engineered to fight hot flashes Temp-regulating fabric keeps you cool Infused with natural minerals that control odor  100% cotton gusset Scratch-free, tagless label SIZE & FIT True to size Mid rise Moderate rear coverage FABRIC & CARE Made with 37.5® Tech Fabric: 83% 37.5® nylon/12% spandex/5% nylon Gusset: 100% cotton Machine wash; using a garment bag is recommended