Boasting a Z87+ Impact Standard rating, the durable Future Tech polarized sunglasses arrive from Heat Wave with "Desert" tan frames on a tinted-black, 1.9mm shatter-resistant polycarbonate lens. Built with a Push-Lock swappable attachment system, the lens can be changed out easily without any tools needed. The tough, polarized shades feature HYTREL® TPC-ET rubberized touch points on the nose and ears to prevent slipping even in sweaty conditions.