- Skin-friendly pongee lining provides maximum comfort
- Hollow cotton insulation traps heat effectively
- Elastic strap hood for cold nights, bottom zipper for warmer weather
Engineered for year-round outdoor comfort, the 4-Season Mummy Cotton Sleeping Bag combines warmth, breathability, and versatility in one ultralight design. Featuring a durable 190T tear-proof polyester shell and filled with insulating hollow cotton, this sleeping bag reliably keeps you warm whether you're trekking through spring woods, camping in cool autumn nights, or braving light winter chill.