Due to the heaviness of metal frames, eyewear manufacturers have sought and experimented on replacement materials to hold the lens of Full- Rim Eyeglasses, by combining metal alloy as well as metal and plastic. Some manufacturers have perfected the ideal materials for Full-Rim Eyeglasses. The popular materials used for Full Frame Glasses are: Zylonite (Zyl) & cellulose acetate, cellulose propionate, nylon, Monel, titanium, Flexon & memory metal, beryllium, aluminum and nickel-silver. On high grade, precious and semi-precious materials, wood, bone & buffalo horn, sterling silver and gold are among the choices. Ideally however the current trends suggests Zyl, Titanium and surgical stainless steel are regarded most due to their lightness, patterns, designs, colors, flexibility and skin allergy resistance. On nose bridges, arches and temple pads the most popular were silicone, megol, rubber, acetate and neoprene with silicone being the most popular due to its soft texture and hypoallergenic properties.