Mountain Hardwear

Phantom 15 Sleeping Bag: 15F Down

What Our Gearhead® Experts Are Saying:

"I used this on a few cold alpine nights where temperatures dropped close to the rating, and it stayed impressively warm without taking up much pack space. The hood and draft collar really seal things up once you’re zipped in, which makes a big difference when the wind picks up outside."

Cold alpine nights demand warmth we can trust after long days in the mountains. Mountain Hardwear built the Phantom 15 Sleeping Bag to provide reliable cold-weather insulation for alpine traverses, hut trips, and multi-day backpacking missions where pack weight matters as much as warmth.

High-lofting 800-fill goose down traps heat efficiently while remaining highly compressible for efficient packing. A lightweight recycled shell keeps bulk low without sacrificing durability, and the performance mummy shape maximizes warmth by minimizing empty space inside the bag. A contoured footbox follows the natural position of our feet, while a down-filled draft collar and face gasket seal in warmth when temperatures drop overnight.