The Tablet Size Digital Grey Kard from DGK Color Tools is a full-size calibrated and tested white balance and color reference card for digital photography. At 7.5 x 9.5 x 0.13", it is the same size as an iPad. The card's color characteristics are molded into it, rather than being painted or sprayed on. The Grey Kard uses pigment-based colorants for color accuracy and is light-resistant. Its color is measured via spectrophotometer for a high degree of accuracy and suitability for white balance and RAW image converters, both in the studio and on-location. Both sides can be used for color correction. The card is designed and made in the U.S.A. of durable, waterproof PVC plastic. Included is an 18 x 5/8" woven lanyard with safety release and detachable connector. Its red color makes it easy to find and retrieve the card, even from deep within your gear bag.