? Ten (10) 1-gram packets per bag ? Indicator beads change from orange to dark green ? Packet size – 1.2? x 0.9? x 0.2? ? Cobalt chloride free Protect your foils and non-foil trading cards from curling with these color-indicating silica gel packets! Each bag contains ten (10) 1-gram packets of silica gel beads packaged in clear, perforated (breathable) plastic. We recommend dropping one or two packets in your deck box, briefcase, or wherever you store your cards. If you’re storing cards in anything larger, check the table at the bottom of this page. The indicating silica gel beads will turn from orange to dark green when the silica gel is about 60% adsorbed (saturated) with moisture ??? When they’re dark green, you’ll know it’s time to consider replacing them with fresh packets. Each silica gel bead contains millions of surface pores that magically soak up water vapor. Silica gel desiccant is a non-toxic, non-flammable, and chemically inactive drying agent that creates a protective environment of dry air that will help prevent cards from curling ? They’re also great for keeping items like shoes, photographs, books, and gym bags free from musty odors and preventing condensation with electronics like cameras ? Protecting your treasured belongings with silica gel packets will ensure they stay dry, despite how humid the storage gets. Works with any trading card games such as Magic: The Gathering, Pokemon, Yu-Gi-Oh!, Flesh Blood, Metazoo, Dragon Ball Super, Force of Will, and Cardfight!! Vanguard. Also compatible with board games like Munchkin, DC Deck Builder, and Settlers of Catan, Kpop photocards, sports cards, and more!