Cutting to the chase, when you are out overnight in the mountains you need a sleeping bag with alpine credentials. This selection of sleeping bags is based on warmth, weight and thermal efficiency. Some bags are 3 season and some 4 season, all details are given so you can select the correct fill and technical details for your trek and comfort level. Walking in the mountains you don't want to be carrying extra weight, so we have limited the list here to sleeping bags weighing from 1kg to 1.5kg made from a variety of down or technical fibres. Highly durable and made for overnight adventure.