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. Fabric 50% Recycled Polyester 20% Nylon 20% Viscose 10% Wool