Crawling into a sleeping bag that you know is going to be warm and comfortable is one of the singular pleasures of backcountry adventure.
The type of fill, how the fill is sewn into the sleeping bag, the shape, and design features will all influence how warm and well you sleep. Compare the differences among the many types of sleeping bags available to find the one that will help you make it through the night.
Rather than having to buy several sleeping bags for different situations, accessories such as liners and overbags let you adapt your bag for a range of temperatures. This can save you money, as well as weight and bulk.
No mandatory testing standards currently exist for rating sleeping bag warmth. MEC voluntarily follows a set of industry standard tests to measure temperate ratings, volume, and loft.
Synthetic fills are a viable, and sometimes preferable, alternative to down. They are non-allergenic, they have a lower initial cost than down, and unlike down, they provide some warmth when wet.
MEC uses both duck and goose down in the construction of its down sleeping bag.