Color, Clarity, Protection Method Seven technology blends incredible color balancing for each of the standard grow lighting spectrums (HPS, Metal Halide, LED, Sun ...) with exceptionally high quality lenses that provide the best in optical clarity. Additionally, Method Seven protection removes all harmful UV A/B rays like most others but additionally also removes harmful UV C rays which are filtered out of sunlight by the upper atmosphere but are still a significant hazard under grow lighting. Many growers suffer through unnecessary stress, fatigue, decreased yield, and even permanent eye injury in their grow room experience from using sunglasses or cheaper knock-off grow room glasses. At best, even premium sunglasses attenuate (decrease) excess light in the grow room but do a horrible job of color balancing in indoor lighting environments, leading not only to discomfort and stress but also to poor viewing and maintenance of your plants. Cheap grow room glasses do an OK to good job of color balancing, but typically have very poor optical quality and inadequate protection from UVC rays. Treat yourself and your grow to Method Seven quality and style!