[1] While no technical standards exist, some hikers consider "ultralight" to mean an initial base weight of less than 4.5 kg (9.9 lb).
In the United States, the terms "light" and "ultralight" often refer to backpackers who carry gear with a base weight below 6.8 and 4.5 kg (15 and 10 lb) respectively.
"Nessmuk") hiked and paddled through the Appalachian territory with only a waxed canvas tarpaulin, walking stick / ridgepole, a small pan, and his trademark dual-bladed hatchet.
[citation needed] Another 'early pioneer' was Grandma Gatewood, who thru-hiked the Appalachian Trail in 1955 with only a duffel bag containing an army blanket, a plastic sheet, an umbrella, and other very simple gear that was much lighter than the heavy equipment common among hikers in those days.
[5] Ultralight backpackers believe a lower base weight allows them to cover longer distances and reduce stress on their bodies.
Some modern down sleeping bags are through-baffled and under-filled such that the user can shift all the insulation to the top of their body thereby maximizing its potential to retain heat.
Ultralight hikers also tend to carry bags rated for warmer temperatures than traditional-weight backpackers, making up the difference on cold nights by wearing clothes to bed, such as a balaclava[4] or jacket.
Careful camping site selection can avoid colder "hollows" (low points where cold air tends to collect)[4] or make use of natural wind barriers such as thick vegetation to compensate for less-warm gear.
Lastly, commercial manufacturers often choose heavier, more durable material for their products in order to reduce the amount of care and maintenance required of the user (and minimize returns of damaged gear).
On long-distance trails with multiple access points, some ultralight hikers choose to place food caches or stop at stores to resupply consumables at frequent intervals, allowing just two or three days' worth of food to be carried in place of a larger load.
[8] However exertion in the form of hiking consumes additional calories; for example the standard US Army field ration is 4500 kcal per day for strenuous work.
Oats (groats or rolled, granola or muesli) and barley also become soft enough with soaking to eat uncooked as a raw food.
Tsampa is a simple, bland and lightweight dish made from flour, and has been used for centuries by wandering Tibetan monks.
[citation needed] Energy bars on average contain more protein and carbohydrates than fat, similar to a fig newton (3.68 kcal/gram), which lowers their calorie to weight ratio relative to other choices.