The Compact Reading Glasses have an adjustable bridge between the lenses so you can make them feel comfortable on your nose without slipping off. Adjustment is easy, simply spread the lenses apart or push the lenses together and try them on until you get the right fit.
Don't be afraid to bend the bridge. The bridge adjustment has been cycle tested thousands of times without breaking. Just be sure to follow the instructions and not bend too far.
If the lenses are too tight on your nose, increase the opening between the lenses by moving the lenses outward.
If the lenses are too loose on your nose, decrease the opening by moving the lenses inward and overlapping them.