Cotton Fabric. Suitable Women Tank Tops For Wearing All Seasons; Perfect For Yoga, Exercise, Fitness, Gym, Running, Any Type Of Workout; Or Just As Casual Tanks For Home And Daily Use. The Tag Free Design Ensures You Stay At Ease Without Any Skin Irritation For Hours.Not Only Is It Designed With Top-Notch Quality Materials That Provide Optimum Comfort During Workouts, But It Also Boasts A Trendy And Sleek Look That Will Have You Turning Heads At The Gym Or On Your Outdoor Runs. The Sport Vest By Renox Is Not Just A Piece Of Clothing; It'S A Statement Of Your Dedication To Fitness And Your Eye For Fashion.