Flip, mount and lock into high performance with the lens that's right for you. Nike Flyfree sunglasses offer interchangeable lens options that latch securely into the frame to help you effortlessly adapt to any environment. The customizable temple tips and nose pads easily bend so you can get a comfortable fit. Plus, we added silicone for traction. And when things heat up, ventilated channels at the temples, hinges and top bar help keep your vision fog-free.