Product Description Our exclusive Heatwave thermodynamic lining as a comfortable, 4-way stretch sock lets you increase the heat of any footwear Seirus Heatwave Sock Liner at Outland USA Browse all Outland USA deals $39.99 In Stock at Outland USA Price checked 9 days ago Buy Now at Outland USA Secure checkout Easy returns or compare prices Amazon eBay Product Details Brand Seirus Size Medium Gender Unisex MPN 2148.0.3833 Socks Seirus