From durability, waterproof component, features a double sided designing with 18% gray side for exposure control and a white side for color balancing For professional photographers, photography enthusiasts, videographers, and anyone requiring accurate color calibration in their work Achieve precise color accuracy in your photos with the Fotover 18% Gray / White Balancing Card, ensures color reproduction and enhances the professionalism of your photography With its size and included carrying case, this gray card is indispensabled tool for maintaining consistent color Balancing across various lighting conditions Perfectly for outdoor, studio photography, product photography, and video where precise color accuracy is essential