Method Seven Clip-Ons change the way you see your plants using your own prescription glasses! Expect great value and exceptional color balancing for HPS lighting. Don't Grow Blind Method Seven designs high-quality glasses and photo filters for indoor and outdoor growing environments. Our grow room glasses provide true color in bright lighting and are optimized for each of the standard grow lighting spectrums. Lens Technology HPS grow room glasses are the go-to optical tool for indoor and outdoor growing under high pressure sodium lights. These polymer lenses are manufactured to exacting standards by Carl Zeiss. Notch filtering technology restores natural color, making it easier to spot issues like pests and nutrient deficiency. These durable, shatterproof lenses block UV light and near infrared heat, keeping eyes cool and moist under bright grow room lights. Frame Technology Our Aviator style clip-on has spring-loaded rubber-coated metal clips that gently hold to your eyewear. This Aviator style fits over a wide variety of larger lenses. For smaller or less shaped lenses check out the Classic HPS Clip-on. Dimensions: 45mm (lens height) x 12mm (bridge width) x 132mm (full width)