WXD Women Yoga Running Compression Under Base Layer Gear Armour Wear Gym Tank Top 3/N coverstitch top and bottom, 1/4" gauge Feed-off-the-arm Sewing Technologies UV Protective Skin Care Fabric, machine washable, tough construction, built to last Material : 90% Polyester / 10% Spandex / Garment Care : Machine Washable Quick Dry, 4Way Stretch, Light wight, Air Permeability