Altos Down 0°F

The shoulder room is a game changer—I’m a side sleeper and usually feel trapped in mummies, but I rolled over easily all night. Down fill kept me cozy at 10°F with just a base layer on.

The extra shoulder room is a game-changer—I can actually roll onto my side without fighting the fabric, and the longer foot box means my toes stay warm all night. Used it in 18°F weather and woke up sweating, which says a lot for a bag this lightweight.

I was worried a mummy bag would feel like a coffin, but the extra room at the shoulders and feet makes all the difference—I can actually shift positions without fighting the fabric. Took it down to a frosty 20°F night and stayed perfectly warm with just a base layer, so I trust the 0° rating complet