1. buying one non-slip sleeve effect is good, but only play reinforcement and not decline.
2. if your nose is low, do not wear no the rubber frame without nose drag, the choice of metal frame, the size of the nose is not the main problem, is your nose level problem, this should be transferred by the professional tone according to your nose to tune.
3. It is best to wear resin film sunglasses, not too much, to reduce the weight to avoid falling.
4. re-adjust your glasses' parameters (angle, horizontal angle, mirror distance) according to your personal factors, this is not a lot of trouble, but need the professional tone, so that the eyeglasses cannot fall down during wearing, and also can ensure correct and comfortable visual effects.