Seirus Innovation® Men's Heatwave Skull Liner Hat features exclusive Heatwave thermodynamic lining has a 4-way stretch, a reinforced stitching for lasting strength and fit under your ski helmet.
Exclusive Heatwave thermodynamic lining as a skull liner
Seirus® gear is made with extremities in mind; to keep your hands, feet, face, and head warm and protected. And not just warm enough to grit through it. When the folks at Seirus Innovation say really warm, they mean like, surprisingly warm.