WrApz Trailbreaker Photochromic Sunglasses - Gloss Black TR90 frame and color changing Amber to Smoke lenses Ultralight and exceptionally strong TR90 flex frame - Triple Vented Photochromatic Lens Distortion free water resistant lens - Anti-slip injected temple tips Polarised lenses for 100% Protection - Griptech anti-slip adjustable nose pad Open bottom frame design - Ultralight 23g - 5 frame colour options Trailbreaker is an AWARD WINNING MODEL - PC Version voted best budget buy in Running Fitness Magazine August 2013