Specifications: Material: calcium chloride particles Size: 5.7in W X 14.2in H Weight: 200g Features: Moisture absorbers hanging bag utilize Tyvek as Calcium Chloride packaging material, good breathability, dust free and does not contain binder or solvent. By using high quality Calcium Chloride, each dehumidifier bag is capable of absorbing 400ml moisture. It is suggested to use one moisture absorber bag in an enclosed environment no larger than 70 cubic feet. High quality plastic hanger/hook and protective case are solid and secure enough to hang around the house to collect moisture and musty odor out of the air. Putting the humidity packs in the protective case can avoid falling and leaking. You can visually tell how much moisture and dampness be absorbed and collected by simply checking the bottom of the bag filling up with liquid from dehumidifying the air. Widely Used-Moisture absorber packets is applicable in a number of places, such as, in your closet, wardrobes, basement, laundry room, bathroom, camper and other enclosed spaces. Moisture absorber hanging bags protect your valuables from excess moisture damage and musty smell.