Thicker than a thermal, and just fine on its own, or rocking it as a base layer. The Seawool Nep Crew is warm and insulative, but allows for air circulation to keep you from getting stuffy. Wear it solo with a pair of jeans, or rock it under your favorite flannel on a brisk fall day. Seawool Seawool is a sustainable fabric that's built to last using recycled plastic bottles and oyster shells. Seawool is warm yet breathable, and has natural antimicrobial properties that keep it from developing a smell. Seawool is static resistant, ridiculously soft, and looks great with just about anything. Fit True to Size Fabric Details Seawool Waffle Sweater Knit Fabric Content 50% Recycled Polyester. 20% Nylon. 20% Viscose. 10% Wool Details Waffle knit through body. Rib cuffs, bottom band, and neck inset. Suede bear bug tag Care Turn inside out. Gentle cycle or hand wash with like colors. Only non-chlorine bleach when neededd. Reshape. Lay flat to dry. Cool iron if needed.