I purchased the CameraTrax white balance and color reference card several weeks ago and it has worked brilliantly. The 4x6 card is very easy to handle and the material is durable enough to be stored comfortably in my camera bag. The card came very nicely packaged with a cardboard stiffener and sleeve. I was expecting a glossy surface on the card but understood its absence better after learning from the user guide that glossy and laminated color surfaces can shift colors. The manual pamphlet is easily as helpful as the card itself because it explains in great detail how to use the card with several different photography programs. It provides very clear diagrams and easy-to-follow instructions, which made it easy to use the card as soon as it arrived. When I bought the card, I was worried that I'd still have to visually compare the card colors to what I see on my monitor. However, once I white balance my camera with the grey card side, I can just take a color reference shot of the 24 color side, which allows me to easily finish the final color balance on my computer. I like that I can shoot JPEG, not just RAW, and still easily get much better color using software I already have. It is also very helpful having the RGB color numbers printed on the card and the guide provides color measurements and simple instructions on how to use them in Photoshop CS4. This is very helpful product and the CameraTrax website has good information on white balance sources and specifically on using a 12% grey tone. Other color and white balance cards seem overpriced but this one is a satisfying product for a very reasonable price and has made the whole process of color correction much easier for me.