Features: Achieve precise color accuracy in your photos with the Fotover 18% Gray/White Balance Card, ensures color reproduction and enhances the professionalism of your photography. 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. Perfectly for outdoor, studio photography, product photography, and video recording where precise color accuracy is essential. With its convenient size and included carrying case, this gray card is indispensable tool for maintaining consistent color balance across various lighting conditions. Specifications: Size:about 20cm/7.87in 30cm/11.8in 60cm/23.62in Component：Watrerproof Cloth Features 18% gray side Package Includes: 1PC gray White Balance Reference Card note: Due to the problems of lighting effect, there will be certain tolerances in the product, please understand. Please allow 0-1cm error due to the manual measurement.