While down sleeping bags offer a superb warmth-to-packability ratio, you might be better off with a synthetic bag. Synthetic bags are generally more affordable than their down counterparts, dry quicker and perform better in damp conditions. If you’re going to be around water, pack a synthetic sleeping bag. You’ll want a bag that’s been designed to maximise loft and made from high-quality fabrics. As always, pay attention to the recommended temperature range when buying. While synthetic sleeping bags can be just as warm as down bags, they’re heavier and bulkier. However, depending on your adventure, that might not necessarily be such a big deal.