Updated 2026
Sleeping bag selection is one of the most misunderstood gear decisions RTW travelers make. Most people buy far too much sleeping bag than they actually need, spending money and adding weight to their pack for capability they'll never use.
The first decision: do you actually need a sleeping bag at all. Most RTW routes through Southeast Asia, Central America, and Africa don't require one. Hostels provide bedding. Guesthouses have blankets. The climates are warm enough that you can sleep outdoors with minimal protection. Many experienced RTWers ditch the sleeping bag entirely and rely on a lightweight travel blanket or sleeping sheet.
If you're doing significant time in cooler climates - New Zealand, parts of Central Asia, Patagonia, or the Himalayas - then a sleeping bag makes sense. But the right sleeping bag depends entirely on where you're going.
Sleeping bag temperature ratings are the key metric. A bag rated to -10°C is not necessary if you're traveling from Thailand to Vietnam to Cambodia. A lightweight bag rated to 10°C would be overkill for that same route. Instead, you need to match your bag to the coldest climates you'll encounter.
Most RTW routes that include a sleeping bag focus on 3-season bags rated to 0°C to 5°C. This covers most of the non-extreme climates travelers encounter. A lightweight 2-season bag rated to 10°C is perfectly adequate if you're staying in warmer regions but want something for occasional cool nights.
Weight matters significantly since you're carrying everything. A 3-season bag weighs 1000-1500 grams. A lightweight summer bag might be 500-800 grams. Over months of travel, that difference accumulates in fatigue.
Down versus synthetic matters for your specific route. Down is lighter and more compressible for the same warmth rating. It's expensive. It's useless when wet (critically important if you're in humid or rainy regions). Synthetic fills maintain warmth when damp and are cheaper, but they're bulkier for the same insulation value.
For Southeast Asia routes, down makes no sense - you'll never encounter conditions where it's preferable and you're paying for nothing. For Patagonia or New Zealand hiking, down becomes more attractive because you're in drier climates and the weight savings matter on longer treks.
Most RTW travelers opt for synthetic bags because the versatility covers more situations and the weather unpredictability doesn't penalize you the way wet down would.
Brand and quality vary dramatically. Expensive doesn't always mean better in sleeping bags - you're often paying for weight reduction and design sophistication that doesn't matter for RTW travel. Decathlon's travel-focused bags are genuinely good values. REI's house brands offer quality. Expensive ultralight brands serve hikers doing multi-week treks, not RTW travelers doing intermittent camping.
Bag shape matters too. Mummy bags are more efficient but less comfortable. Rectangular bags are roomier but waste heat. Most RTW travelers should prioritize comfort over thermal efficiency - you're not in survival mode, you're trying to actually sleep.
Liners extend bag life and add minimal weight. A $20 liner protects your bag from the accumulated dirtiness of months of travel and can increase the effective temperature rating by 2-3°C, effectively extending the bag's usefulness.
For most RTW routes, the perfect bag is a lightweight synthetic model rated to 5-10°C, weighing 800-1200 grams, costing $80-150. It's not exotic, not expensive, but adequate for the actual conditions you'll face while traveling the world. The $200-300 ultralight down bags appeal to mountaineers and serious backpackers - RTW travelers typically don't need them.