Polarmax Women's Double Layer Crewneck Base Layer Shirt - Made with a special 2-layer soft jersey knit, this thermal is sure to keep you warm when you need it most. Crew neckline Spun polyester is slightly brushed for extra softness Two fabric layers trap air for extra warmth Flat seam construction for seam strength and longevity Versatile for sports or everyday warmth needs Midweight warmth, relaxed fit 100% polyester Style: PM1102