Mummy Sleeping Bag 4 Seasons
The four-season mummy bags are compact, easy to carry, and durable, but they lose their insulation when wet; for non-cold three-season use, cotton bags offer be...
The four-season mummy bags are compact, easy to carry, and durable, but they lose their insulation when wet; for non-cold three-season use, cotton bags offer be...
Mummy bags are cheap and warm even when damp, but heavy and bulky; down performs better in cold. Temperature ratings are only a guide.