Ultralight backpacking

Ultralight backpacking is a style of backpacking that emphasizes the use of the lightest-weight equipment available. Ultralight backpackers strive to reduce their base pack weight (the weight a pack and the gear inside excluding consumables such as food, water, and fuel) as much as possible. Although no technical standards exists, the terms light and ultralight commonly refer to base pack weights below twenty pounds (9 kg) and ten pounds (4.5 kg) respectively. "Traditional" backpacking often results in base pack weights above thirty pounds (15 kg), and sometimes up to sixty pounds (30 kg).
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