Metal
Metal frames are advantageous because of its adjustable nose pad for comfortable wear. But, metal frames are easier to lose their original shape, but unlike plastic frames, they are strong and durable towards heat and also can be adjusted easily by skilled opticians. Overall, plastic frames are lighter than the metal frames and metal frames tend to be heavier. However, titanium is used as a superior metal frame material that is lightweight, yet durable and longwearing.
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