Bear-resistant food storage containers, commonly called bear canisters or simply bear cans, are usually hard-sided containers used by backpackers to protect their food from theft by bears. Bear canisters are seeing increased popularity in areas where bears have become habituated to human presence, and are required in some regions such as Yosemite National Park in the United States.
A bear canister typically weighs between 2-4 lb (1-2 kg), and has a storage capacity of 400 - 900 in³ (6 - 15 liters). The actual capacity in terms of the number of days of hiking food stored will vary with the appetite of the hiker, the selection of food, and the skill in which it is packed, but a 700 in³ canister will likely hold up to week's worth of food for the average hiker.
