MCR Safety RT110AF Rattler Nylon Indirect Vented Elastic Strap Dielectric Glasses with Black Frame and Clear Anti-Fog Lens Rattler nylon indirect vented elastic strap dielectric glasses Features interchangeable 3-position ratcheting bayonet temples and an adjustable head band with each pair Full length, non-slip thermal plastic rubber temple sleeves for comfort and grip Closed cell foam seal provides optimum protection from dust and debris Available in black color frame and clear anti-fog lens