Using warm Thermyl fleece with windproof, wicking fabric at the nose and mouth, the Boys' Artcyc Pivot Balaclava will prepare you for any elements thrown your way. Super comfortable hinge silhouette. Smooth faced fleece for extra warmth. Windproof, wicking fabric pieced in at nose and mouth. Moisture management. Offered in 2 sizes.... Polyester Light Weight Sweater Knit Bonded to Anti-Pill Fleece.