D.Zefron Compression Under Napping Leggings Base Layer Wear Long Pants Winter Gear : D.Zefron Warm Gear, 3D 700 Napping Fabric, Keep Warm 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