POLARLENS S25 / Cycling Glasses / Sport Glasses / Running Glasses / Exchange System Lenses /German Engineered / Introductory Pricing for US market / Includes belt loop carrying case and microfiber cloth bag for cleaning This exchange system is great for the beginner or advanced cyclist. Our buyers say the value on these is 3 times what we are selling them for! The frames are durable, lfexible and lightweight. The lenses are so strong even a hammer can't break them. Cool lense colors offer varied protection in different lighting needs. Some buyers are using the clear not just for cycling at night but also as protective eyewear around the home. Great buy for the price. We work directly with the manufacturer to get the best price to you!