Foster Grant Polarized Aviator Sunglasses with Spring Hinges & Ironman Eyeglass Strap Aviator style sunglasses deep gun metal frame polarized lenses Foster Grant Polarized lenses offer high-impact resistance,superior optical clarity and creates less distortion Spring Hinges and Metal Frame for strength, comfort and durability Premium-designed sport build frames with temple inserts and rubber nose pads MaxBlock 100 % UVA-UVB Protection