DGK Color Tools DGK-XL Plus Extra Large Size 4 Card White Balance 18% Gray Warm Card with Carry Lanyard Includes four XL size 4"x5" color calibrated reference cards, white, black, gray, and warm. Premium carry strap and full color instructions included Specially formulated warm card for custom white balance - instantly improve skin tones and eliminates the chilly "electronic" look. Works with JPEG and RAW files. Engineered for today's HD camcorders, digital video SLR cameras, and high definition digital still cameras. Designed in Boston and made in USA Easy to carry in your pocket or in your bag, 100% waterproof