Oakley Enduro 25L 4.0 Backpack - Black/RedOakley Enduro 25L 4. 0 Backpack Oakley's obsession with innovation has created a legacy of science, sculpture and defiance of conventional thinking. Oakley's superior lenses are tested under extreme circumstances to guarantee uncompromising protection against high mass impact, while the brand's Plutonite technology stops every wavelength of ultraviolet radiation from the sun. Whether you're after a pair of the brand's signature sunglasses or basics