When you're on the trail for days at a time, every ounce of weight and square inch of space in your pack matters. Backpacking stoves are lightweight, compact stoves that won't take up a ton of space in your bag. Most fall into one of two basic categories: canister stoves and liquid gas stoves. As a general rule, canister stove systems are the go-to choice for summertime excursions, trips that require you to keep your pack weight as low as possible, and campers who want an easy-to-use system. Liquid gas systems are preferable for harsh winter conditions (such as a multi-day ski tours), cooking for larger groups of people, high-altitude expeditions, and international backpacking trips.