R2 proof excel in aerodynamics and overall durability, excellent customization to most faces. Frame material: Grilamid TR90 Frame color: matt crystal black Lens material: impact-resistant polycarbonate Lens color: grey with Platinum coating in color black red revo Sun category filter: 2 Frame size: Standard , optical sizes: 134-0-135 Available with an ATPRX optical insert Adjustable nosepads for a perfect fit Impact resistant materials UV 400nm - 100% protection agains UV radiation A, B, C Practical and resistant hard foldable case plus soft microfieber cleaning pouch R2 for FREE CE Safety Pro - sunglasses safety and quality quaranteed