Like the temperature rating, sleeping bags are also labeled by seasons to help you choose which bags would suit for your needs. A 3-season sleeping bag has a temperature of +10° to +35° and would be best suited to use during the seasons spring, summer, and fall. Winters require a sleeping bag that’s designed withstand much colder temperatures, though.
Some of the features to look for in a quality 3-season bags are the following: cinch-able hoods, draft collars, and zipper draft tubes.
Comfort temperature in sleeping bags refers to the lowest temperature a bag is intended to keep the user warm and comfortable, without the need for any additional blankets.
Question: Can Down Sleeping Bags be Washed
Answer: Down sleeping bags could be washed, but it needs more time and careful attention. It is pretty costly to have them professionally cleaned, but you could also do it yourself.
Yes, down is warmer than synthetic. Down is the soft, fluffy, and lofty stuff under the feathers. Considered as nature’s insulator, down (made from duck plumage, not feathers) it is effective in trapping air and body heat, while still being breathable. Hence, it wicks unwanted moisture away from your body.