Base Camp Snail Shop No Frames Cycling Wrap Running Outdoor Sports Sunglasses Exchangeable 5lenses Unbreakable Polarized Uv400 Super lightweight frame design: the use of the most advanced TR90 material UV400 lenses: 100% prevent ultraviolet light. Absolute protection, protect your eyes from UV damage Super Flexibility: 20 rate higher than ordinary lenses, showing the impact of the characteristics of raw materials Super Fight Piano paint: Frame with piano paint technology, never fade Adjustable nose pads design: ergonomic, designed to create human-like nose type. Non-slip rope: can entangle frames hanging in the chest, preventing the loss of the glasses fall