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ALL ALTON PRODUCTS ARE COVERED BY A LIFETIME WARRANTY.* CLICK HERE TO LEARN MORE.
ALL ALTON PRODUCTS ARE COVERED BY A LIFETIME WARRANTY.* CLICK HERE TO LEARN MORE.
ALL ALTON PRODUCTS ARE COVERED BY A LIFETIME WARRANTY.* CLICK HERE TO LEARN MORE.
850FP Hyperdry™ Down Filling
Enjoy the superior loft and thermal efficiency of 850 fill power goose down, contoured in differentially-cut box-wall baffles. This feature traps the air warmed by your body, keeping your sleeping setup toasty warm even during the coldest nights.

Comfortable & Secure
Seal in the warmth from head-to-toe with this uncompromising, mummy-shaped design featuring elasticated 3D neck draught collars and a full-length draught collar along the zipper.

Adjustable Hood
Stay reliably protected from the wind and cold with an adjustable hood and external baffles that shield your face.

Spacious Square Footbox
Move your feet freely throughout the night and keep your toes toasty warm, with a roomy square-shaped footbox.

Wind & Water Resistant
Stay warm and dry in wet conditions with fluorocarbon-free, water-resistant goose down, housed in a wind and water-repellent ripstop nylon shell, finished with a Durable Water Repellent (DWR) coating.

Responsibly Sourced Down
Alton is committed to only supplying down products that meet the Responsible Down Standard (RDS); the global standard for the ethical sourcing of down and feathers.

Ultralight & Compact
This sleeping bag offers superior protection in the wild with an impressive warmth-to-weight ratio. Plus, it comes with a complementary Compression Sack for easy packing and carrying.
