MATERIAL: 87% Polyester, 13% Elastane. Fabric Treatments Antibacterial deodorization - natural fiber treated with an active ingredient that protects it from microbial growth. Moisture wicking - quickly moving (or wicking) sweat to the fabric's outer surface, and drying rapidly so that your sweat doesn't saturate the fabric. FIT: Fitted. DESIGN: The stealth compression cut-off tanks are designed to keep you comfortable during even the most intense workouts. Made with stretchy compression fabric, this tank conforms to your body's shape, allowing you to move freely and without restriction.