This aggressive minimalist style is perfect for those who are always on the run. The reactor has been designed to breathe remarkably well and is the lightest frame we have ever offered. The Reactor PM features photochromatic lenses which change automatically in varying light conditions. Comes in Shiny Black or Matte Aluminum, both with Photochromatic lenses. Lightweight half frame sports wrap. TR90 nylon frame materials. Adjustable nose bridges for a customized fit. Tactile rubber arms to prevent slipping. Fits average face shapes. 100% UVA/UVB Protection. Hydrophobic lens coating to repel water, oil, dust, and sweat Meets ANSI Z80.3 standards for optical clarity and impact resistance.