The primary materials that compose this product contain a minimum of 20 percent recycled content. You'll love the classic style of these The Book Club Bothering Sights reader glasses with round frames made from metal and recycled plastic materials. Clear plastic lenses feature blue light lens technology which cuts up to 30% of blue light emitted from digital devices. Clear, adjustable nose guards. Protective hard case made from recycled materials included. Imported. Measurements: Eye Size: 47 mm Bridge: 15 mm Temple Size: 148 mm Weight: 1 oz Product measurements were taken using size +2.00. Please note that measurements may vary by size.