"Real optical glass vs acrylic lenses: Each handheld 3X magnifying glass has been designed with optical grade glass lenses, which have been shaped, ground, and polished to precision optical standardsUsable vertically or horizontally: Designed for many applications, this powerful magnifier can be utilized both vertically and horizontallyHigh quality optical grade glass lenses: The extra-wide, large glass magnifying lens provides exceptionally clear images without distortionLightweight & durable design: Weighing less than a pound, this handheld magnifier will provide comfortable viewing for any amount of timeLifetime warranty & money back guarantee: If you are dissatisfied for any reason with this product, please return it for a prompt refund at any time"--Amazon