Tulum is the world's most technically advanced round sunglass frame. Combining ultra-light trivex lenses, stainless steel frames, and our Zuma™ fit and retention system, these are the first classic round frames truly suited for marathons, triathlons, and other intense activities. DETAILS Lifetime Warranty Polarized Palm Green Mirror Lenses Handcrafted, Sustainable Acetate Frames Three barrel stainless steel hinges and temples Zuma™ fit and retention system 100% UBA / UVB Protection Size: 51-21-147 Canvas Hard Case Microfiber Cleaning Pouch Shipping within 2 business days