Sunglass frame made with a tough and durable TR90 material. Hinge: Reinforced nylon with stainless steel pin. Bridge: Built into the frame. Frame: One solid front frame with with inset lenses, and hinged temple tips. Shape: A mid-size rounded rectangular lens with generous coverage against the elements. Complimentary to a variety of face shapes. Specs: Lens width 63mm x height 41mm, Bridge width 17mm, Temple length from hinge 130mm.