Coldpruf Basic Men's Pant Big and Tall Base LayerTwo-layer engineeringTraps air between layers providing a natural barrier of warmth60% combed ring spun cotton, 40% polyesterFabric weight: 5.25 oz.Tagless design and flat seams provide a smooth fit and extra comfortRib cuffs for added protection against coldComfort WaistbandGussets and front and back rise provide superior comfort and fit