Jetter EbonyProduct Details The Jetter Ebony is made from reclaimed ebony wood infused carbon fiber veneers to ensure maximum durability. These temples are produced with black acetate tips making the frame adjustable. Jetter Collection: Lenses 52mm, Bridge 21mm, Temple 143mm Care Details When not in use, glasses should be placed in their case or pouch. Store glasses in a safe cool place after use. Be mindful when exposing glasses to extreme temperatures. Use both