Constructed from Grilamid, a lightweight frame material ideal for everyday wear due to its strength and flexibility 8-base polycarbonate ARC lenses for increased optical performance Robust 5-barrel hinges 100% UV protection reduces eye fatigue and long-term sun damage Frame measures 61-17-121 SPY+’s Happy Lens is the foundational technology the brand offers across all its sunglass lenses, but it’s far from basic. Happy is SPY+’s proprietary technology designed to not just protect eyes but also boost mood and alertness by harnessing the beneficial aspects of long-wave blue light. Dale Earnhart Jr. Signature 88 Collection. Custom built from high quality Propionate. 8x4 base toric ARC lenses. Stainless steel hinges. Spy logo at temples. 100% UV protection. Storage bag included. Made in Italy. Dimensions: Lens 66mm w x 40 mm h Bridge 14mm Temple 121mm Frame width 138mm