Tr90: TR90 is thermoplastic material produced in Switzerland it is incredibly durable| flexible| and lightweight Polycarbonate: Polycarbonate is lightweight| comfortable| impact resistant| and provides UV protection. One-piece| internal Spring Hinge fitting broader range of headwidths. Anti-slip| adjustable| non-allergenic rubber nose pads. Anti-slip| adjustable endtips with stainless steel core for professional adjustment at the opticians.16º lens angle adjustment to cater for different riding modes: road| off road| TT racing.
