Common materials include metal, plastic, polyurethane (PU), and leather or PU leather.
Protective features commonly include dual-layer sponge cushions, soft PU or leather surfaces, and adjustable non-slip rubber rings that hold frames securely without scratching.
Several visor holders indicate they can accommodate about 2 cm (0.8 inch) of temple/arm thickness.
Many visor and glasses clips are designed for easy installation and one-handed use. However, avoid clipping or carrying heavy items with one hand until you’re confident the clip is secure.
Eyeglass chains attach using an adjustable ring with a non-slip rubber insert that fits over each temple; you can change the ring position to accommodate different frame thicknesses so the chain holds securely without scratching.
