With interchangeable technology that utlises Oakley’s SwitchLock technology, the Racing Jacket OO9171 sunglasses are perfect for changing environments. The removable strap ensures that they stay in place even in the most extreme situations and the Unobtainium ear stems help when the strap is removed, as they grip more when in contact with perspiration. The Three-Point fit ensures comfort and removes the stress points that can be caused by conventional sunglass frames. The O Matter frame is lightweight and durable, so its sure to last the test of time. This frame is also available with polarised lenses, which, along with the standard Plutonite lenses, block 100% of UVA, UVB, UVC and harmful blue light up to 400nm.