AUTHOR Vision LX Interchangeable Lens Sunglasses offer top-quality features. Developed for durability and comfort. They include three interchangeable lenses to give you optical clarity day or night, a microfibre cleaning pouch and zipper box with external slots for storing the 2 pieces of unused lenses. - 3 pieces of easy to change shatterproof polycarbonate lenses. Sunglare lens with revo surface – filter category 3, transparent yellow – filter c. 0 and clear transparent - filter c. 0. - Have a virtually indestructible frame made of thermoplastic PC - this is light and durable nylon material that resists chemical and UV damage. - Adjustable nose allow for a custom fit. - A-slip nose and ear pads - the more you sweat, the more the hydrophilic rubber nose and ear pads grip to prevent slippage. - Author sunglasses provide 100% eyes protection against UV radiation and meet the European regulation (EU)2016/425 in accordance with EN ISO 12312-1:2013/A1:2015 norm. - Weight 28 g.