Dry-Packs DP45PLASTIC-10pk 45gm Indicating Silica Gel Hard Plastic Canister, Pack of 10 Dehumidifier canister is compact, rugged, portable and electric free, no cords Cobalt free Size- 2 1/4-inch by 2 1/4-inch by 1-inch sealed in clear plastic When orange beads turn dark green you can reactivate easily in oven or microwave Great for rvs, camping gear, fishing gear, camera case, lens storage Tool boxes, safes, gun cabinets, laptop bags, closets, storage bins, shoes, boats and more