EUC! Athleta's Sheer Stripe Chi tee's ultra-lightweight and breathable fabric is perfect for layering. 93% Polyester/7% Lycra Spandex Tissue-weight fabric is so lightweight it feels like you're not wearing anything at all Ultra-breathable fabric lends breezy performance Unstinkable Inspired For: Gym To Fro Studio Workouts Semi-fitted LAYER UP. Light and sheer nature makes it ideal for layering