The District Vision Takeyoshi Altitude Master Sunglasses are an 8 base frame construction designed for rigorous outdoor pursuits such as trail running, climbing and hiking. The ergonomic form is engineered to aid ventilation and enhance the field of vision whilst protecting the eyes. 

D+ Water Gray lens was developed for physical pursuits around water. 
The lens offers 100% UVA/B protection while transmitting 10.76% of visible light and 8.83% of blue light. Athletes often forget sunglasses are a medical device. Our eyes contain low levels of melanin. This means each time we expose them to sunlight they become more sensitive.