Affordable, portable size case with cards make it easy to keep Spyder Checkr Photo in your camera bag or in your pocket Rigid outer casing and unique, sturdy card construction offers superior product protection for on-the-go/on-location shoots Ergonomic case design fits comfortably and securely in the hand, minimizing handling errors Four interchangeable cards featuring a robust 62 color targets Expanded skin tone offering makes Spyder Checkr Photo ideal for portraiture Expanded gray scale and large gray balance targets allow for greater depth and detail in images Ultra-matte finish on long-lasting, ink-printed, museum-quality paper cards allows for the truest color renditions and deepest black Cards are made from 78% bamboo, a renewable resource for paper Cards are interchangeable. Easy to replace and/or add new cards as color offerings expand for truly customizable solutions