Bring your body into balance for a good night’s sleep with technology used by astronauts and Olympic athletes! Goodnighties® patented Ionx® sleepwear for women 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® three quarter sleeve top is a natural solution for better sleep! 88% polyester/12% Lycra®. S - XL. Machine wash (no fabric softeners). USA.