Callaway Chev Air Sunglasses Clean classic lines that can accommodate on course or on your way to the Boardroom. This style has all the benefits of advanced protection and performance along with executive looks. TR90 frame material for superior strength, memory and lightweight comfort. Ergonomically wrapped frame and lens design for full ocular coverage supplying ultimate protection from the elements. Megol rubber nose pads and ear tip inserts for secure non slip fit. Next generation Neox NX9 lens for superior visual acuity and protection. NX9 is a darker lens with gradient mirror allowing only 9% light transmission. Features Callaway Chev Air Sunglasses 8226 TR90 frame for superior strength, memory and comfort. 8226 Ergonomically wrapped frame and lens for full ocular coverage. 8226 Megol rubber nose pads and ear tip inserts for secure non slip fit . sts breakdown by water 8226 Next generation Neox NX9 lens for superior visual acuity and protection.