Sweatshirt: Shell: 60% cotton, 40% polyester. Base: 97% polyester, 3% elastane. Lining: 100% polyester. Sweatshirt Fleece-Lined: Shell: 60% cotton, 40% polyester. Base Fabric: 97% polyester, 3% elastane. Pants Regular/Fleece-Lined: Shell: 60% cotton, 40% polyester. Base Fabric: 97% polyester, 3% elastane