Method Seven Operator Metal Halide Plus Grow Room Glasses Experience EXCEPTIONAL COLOR BALANCING for MH (metal halide) lighting with our proprietary polycarbonate lenses manufactured for us to exacting standards by CARL ZEISS VISION. Method Seven premium lenses are asymmetrical to ELIMINATE DISTORTION that occurs with typical value eyewear with a curved lens. Method Seven Signature CARL ZEISS METAL HALIDE polycarbonate lenses are durable, light, color-corrective, and protective under LED lighting. FLASH SILVER COATING provides a mirrored look and helps shield from excess light. 100% UV PROTECTION. Increase your comfort, pleasure, and plant experience under the harsh lighting conditions common in the grow environment. Metal halide (MH) lights produce a unique light spectrum that is very challenging to the human eye. SEE THE DIFFERENCE and treat yourself to QUALITY with the FIRST & BEST GROW ROOM GLASSES in the industry designed by Method Seven an OPTICS TECHNOLOGY company. Includes Microfiber Spectrum Art pouch that doubles as lens cleaning cloth.