Durable HD Lens Technology and Ventilation holes Design ---HDO technology lens provide clear vision and UV400 protection, high quality lens materials meets the function of Super Olephobic, Super Hydrophobic, Impact Resistance. Ventilation on the lens speed up air circulation. Premium Frame Materials---TR90 soft memory frame light weight, whole glasses included the lens only 35 grams wearing comfortable, hydrophilic and unobtainium material temple and nose pad rubber, non slipping off and provide better touch between the glasses and your skin. The nose pad is adjusted. Three Point Fit Design---Make your eyes focus on the items and optimizes the clarity of the the vision also provide a steady standing. Widely Use---Our sunglasses are designed for cycling, running, fishing and other outdoor activities.