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.
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