Description The Method Seven Citadel HPS restores natural color under yellow spectrum HPS grow lights. Durable polymer lenses with a flash silver coating attenuate light while adding some serious style. This Italian crafted wrap frame meets or exceeds ANSI-Z87 S standards. Lens Technology If yellow haze is in your eyes, these lenses will make you want to kiss the sky. High pressure sodium (HPS) lights distort the natural color spectrum and emit harmful ultraviolet light. Our HPS Classic lenses balance color under HPS lights, so your eyes can work more comfortably, more naturally, and with less strain. Designed in conjunction with Carl Zeiss Laboratories, these durable polymer lenses offer 100% UV protection. A flash silver coating attenuates light, plus it looks cool too. Spot issues like pests or nutrient deficiencies, nip them before the bud and instantly become a better grower. Frame Technology The Method Seven Citadel HPS is a hybrid frame hitting all the marks. Wrap style coverage creates a flat modern look and it’s tough enough for industrial use. The Italian crafted Citadel frame is certified by independent labs to meet or exceed International ANSI MSZ87 S specifications, including high velocity impact resistance, and without any compromise to style. Safety never looked so good.  Why Method Seven? Grow rooms have lots of light, but it’s not broad-spectrum. Though this might be great for plants, it’s not so great for your eyes. Human eyes contain rods and cones, which need broad-spectrum light in order to perform their functions. These functions include things like focus, recognise shapes, register movement, and see colour. In a grow room environment, sunglasses make things worse by darkening all the light. You might squint less, but you still can’t see colour, and it’s even more difficult to focus. Other grow light glasses attempt to colour balance the extreme light spectrum but use cheap plastic lenses. The cheap plastic lenses usually have very poor clarity that distort light and are hazy or blurry. Method seven delivers epic colour and complete safety under HID lights. You’ll see foliage accurately, spot pests and deficiencies early and efficiently. No headaches, strain, and no long-term eye damage. Don’t Grow Blind. Frame Dimensions