HumphreyLine Sun Visors designed for comfort. We have a specially designed mold for maximum comfort and long wear. In addition, because there are no sharp edges, no foam strip is needed…although it is available as an option. HumphreyLine's visors are either made of the traditional opaque polystyrene ( SV3) or of a clear material with a UV inhibitor added (SUN-J) so it has sun blocking capabilities similar to sunglasses.