We know that some of our customers have struggled to change their lenses, but once you know how, it's very easy! Follow these instructions to change the right-hand lens (looking from the front):
With the lenses facing you, grip the nose-bridge section of the frame with the thumb and first finger of your left hand. Place the thumb of your right hand on the bottom left-hand edge of the right-hand lens, and the first finger of your right hand on top of the frame, above the right-hand lens.
Gripping the lens with your thumb, simultaneously pull the lens down and to the right (i.e. away from the nose bridge section), whilst gently bending the nose-bridge section up and in the opposite direction with your left hand (don't be afraid to do this - the frames are shatterproof and will not break). The lens will pop out. Simply repeat this process in reverse to remove the other lens.
To fit the replacement lens (using the right-hand one as an example), slip the lug on the top-right of the lens into the end of the provided groove on the frame. Slightly flex the nose-bridge section up and to the left once again (as with lens removal), then push the right-hand edge of the lens up into the groove; the lens will snap into place. Repeat for the other lens.