These polyprpylene thermal bottoms from Sea to Summit sister brand, 360 Degrees, are the definition of cheap & cheerful. Made from warm and lightweight polarised polypro, the material is hydrophobic and wicks sweat from the skin. The seams are non-chafe flatlock stitched and will keep you comfortable during any outdoor activity, wet or dry. Tons of sizes, including XXS, three colours and the price is comfortable too!