What would be XlostX light, now is utilized for maximum efficiency. Attach to any surface for ultimate light uniformity. Get creative: mount to walls, poles, pots. Highly reflective. Use either side. Double the thickness of any other type on the market. - 98% reflective - Optimum light return for your plants - Excellent light blocking capabilities - Use either side, both are reflective - Reduces XhotspotsX by spreading your light evenly - Tear Resistant