Designed to help your body recover all your rest. New in box Sixe women’s XXS, but generous more relaxed fit. This fits me and I wear size 4. The mannequin on which this top is featured is size 2. Inspired by Tom Brady’s training routine, UA created an advanced sleep system for better rest and recovery. Soft knit fabric is lightweight and comfortable. Four way stretch construction moves better in every direction. 5% polyester, 19% Modal, 6% elastase