What Sleeping Bag Shape is Right for You?

Mummy Style sleeping bags feature a tapered cut that increases heat-trapping efficiency. This allows you to choose a lighter and less bulky bag and still get comparable insulation. These are your best choice for colder, high-elevation conditions.

Rectangular sleeping bags are heavier and bulkier due to its lack of tapered ends. It is also inefficient to heat insulation since there is more space for your body heat to heat up. On the positive side there is more room to change sleeping positions plus they can be unzipped and used as a blanket.

Semirectangular bags provide a balance between the two above options. They are more roomy than a mummy and less bulky than a rectangular.