From UNIQLO Online Uses AIRism with dry and cool-touch functions. - AIRism keeps your skin feeling smooth and comfortable. - Racerback design allows for unrestricted shoulder movement, making it ideal for yoga and other activities. - Design updated to utilize drapey material. Gathering at the back creates a clean and neat look around the shoulders while allowing the hem to flare gently, creating a silhouette that effectively covers the upper body. - XS, XXL, and 3XL sizes are only available online.