This is the Wiley X PT-1 Sunglasses UV Protective Sun Glasses Features: Frame eliminates tunnel vision with 90-degree Wrapback™ Shatterproof Selenite™ Polycarbonate lenses that meet the MIL-PRF-32432(GL) ballistic standards: ANSI Z87.1-2010 high velocity and high mass impact standards: as well as US Federal OSHA 1910.133(b)(1)(1) standards Clear lenses provide maximum light transmission allowing wearer's to see precise color values. Perfect for hazy or overcast, dusk/dawn conditions and indoor use. Light transmission: 89% T-Shell™ Lens coating resists scratching 100% UVA/UVB protection with distortion free clarity Adjustable take flight nose piece accommodates any face/nose bridge Compatible with the PTX Prescription Insert Includes: Cleaning Cloth with Wiley X Logo Loop Leash Cord Zipper Case 2 Lens Pack Wiley X PT-1 Interchangable Sunglasses offers a virtually unbreakable Triloid nylon frame that allows the user to easily change specific lens tints for various light conditions. Wiley-X PT 1 Ballistic Sun Glasses ' Circular frame design surrounds the frontal lobe, providing incredible peripheral vision and backlit glare reduction. PT1 Wiley X Ballistic Glass also has custom nose pad that constructed from a soft, clear, neoprene rubber compound that can be adjusted to accommodate any size nose bridge and set the level of the frame on the face.