Brand: Carson Optical. MPN: VM-20. Carson Scratch Resistant Polycarbonate 1.5x Power (+2.5 Diopter) Protective Magnifying Safety Glasses with Clip-on Flip-Up Lens System features a flip-up lens system for convenient use. The scratch-resistant poly carbonate lenses ensure long time use. They are impact resistant and feature UVA/B/C protection. Great for hobbies & crafts where eye protection and magnification is needed.