The Nappa Leather Retainer combines premium stitched embossed leather straps with our proprietary molded silicone ends for for a high level of stretch and grip without losing shape over time. The gloss finish on the leather ensures durability in a wide variety of environments, while delivering understated sophistication with the functionality you expect from your Chums. Built to fit most frame sizes and styles, these sunglass straps pair seamlessly with any frames and complement both relaxed and polished looks.