Bring your body into balance for a good night’s sleep with technology used by astronauts and Olympic athletes! Patented Ionx® Goodnighties® sleepwear is infused with negative ions to wick moisture and balance the ill effects of positive ions in the environment. The result? Cool comfort and soothed muscles for a better, more restful sleep. Goodnighties® cropped pants with Ionx® technology are a natural solution for better sleep! 88% polyester/12% Lycra®. Machine wash (no fabric softeners). USA. Cropped pants have elastic waist and 22" inseam. S - XL.