Western Mountaineering SummerLite Sleeping Bag

For those who want true ultralight performance without sacrificing warmth, the SummerLite is the perfect balance of weight, comfort, and packability. At just 19 ounces, this fully baffled sleeping bag maximizes the loft of its 850+ fill power goose down, ensuring efficient warmth on cool summer nights. The full-length #5 YKK zipper provides versatile ventilation, while an insulated draft tube helps seal in heat. Constructed with breathable 12-denier ripstop nylon, the SummerLite offers durability without excess weight. Whether you’re thru-hiking, bikepacking, or fastpacking, this bag delivers an ideal blend of lightweight design and all-night comfort—because summer adventures shouldn’t mean restless nights.

Filled with 850+ Fill Power ethically-sourced premium goose down
Continuous baffles allow you to shift down for more insulation in colder weather
Full-length #5 YKK zipper provides a smooth, easy unzipping experience while saving weight
Insulated Draft Tube blocks cold air and keeps the torso better insulated
Breathable 12 denier ripstop nylon outer shell makes bag ultralight yet durable
Minimal design keeps bag as light as possible without eliminating key insulation features
Comes with ultralight stuff sack and breathable mesh storage bag
1 lb. 3 oz. Total Weight