95% Cotton, 5% Spandex Machine Wash Quality Fabric: This V neck/Crew neck workout muscle tees made of 95% cotton & 5% spandex textured fabric, stretchable, breathable, lightweight, durability, soft and comfortable to wear in all days and full range of movement. Fashion Muscle T Shirts: Designed with v-neck/crew neck and short sleeve, muscle fit cut and complement your physique, our men's gym tops offer the ultimate fit, which makes you look more muscular and powerful. Pairing with a Muscle Fit Stretch Shirt: Solid black/white/grey/red/green/blue/army green/khaki fitness muscle t shirts great for matching with shorts, sweatpants, jeans or joggers, etc. Suitable for all seasons. Stylish Gym Workout Tees: These muscle fit tee shirts are perfect for gym wear, daily wear, exercise, running, walking, boxing, cycling, dating, beach, holiday, street, meeting, etc. Garment Care: Machine Washable. Note: These men's t shirts are slim fit in stardard US size, so if you wanna relaxed fit, you'd better choose one size larger than you usually wear.