$1,049.95
The Brindabella 850, available in Standard, Women's & XL sizes, is a high-performance sleeping bag for cool to cold adventures above & below the snow-line.
A unique Cordless Collar System, vertical baffles for insulation efficiency & new shell fabric providing marked improvements in function & performance.
Options for Left or Right hand zips across the size range.
We are committed to removing all fluorocarbons (PFAS) from our Mont products. The construction of our shell wear membrane technology, Hydronaute, has never contained PFCs and our DWR coating that is applied to this shell wear is PFAS-free*.
This is just one of the many steps we have taken to care for our people and the planet.
*non-intentional PFAS
This product is filled with Premium White Down with a loft rating of at least 800 cubic inches per ounce.
Mont's down is selected for it's high quality, purity and the fact that it is not live plucked.
RDS is an independent, voluntary global standard that ensures down is not sourced via live plucking, that birds are not force fed & that a birds welfare is always upheld.
Certified by IDFL
Project #: 005963
We’re proud that the Brindabella XT Series Down Sleeping Bag was selected as a Finalist in the 2026 UK Outdoor Industry Awards. Designed for serious cold and built to endure, the Brindabella XT continues to earn the trust of those who rely on their gear in the harshest conditions.
This recognition affirms our commitment to crafting equipment that performs when it matters most, with durability, integrity, and the wild in mind.
Comfort in the Extreme: Using advanced monolithic PU membrane technology, Hydronaute XT fabric is completely waterproof, totally windproof & highly breathable. Guaranteed to maintain greater warmth & comfort than coated fabrics, Hydronaute XT is the best protection for down sleeping bags & clothing in cold to extreme conditions.
Keeping down dry is vital for optimal performance; wet down just won't keep you warm. Waterproof Hydronaute XT fabric provides exceptional moisture protection for down clothing & sleeping bags.
Highly Breathable: If not removed promptly, water vapour from your body will gather on down & reduce its ability to trap warmth.
Warmth Sealed In: With a 100% windproof rating, even Arctic blasts will not penetrate Hydronaute XT fabric, keeping warm air trapped inside.
Mont's new Cordless Collar System provides superior insulation around your shoulders and neck without the need for uncomfortable and fiddly draw cords.
The Cordless Collar can be wrapped snugly around your neck and shoulders or in warmer conditions can be secured inside the sleeping bag to increase ventilation.
The Cordless Collar is a unique Mont design and can be found on Brindabella, Spindrift and Expedition 8000 sleeping bags.
The Radial Arc Baffle System is a significant design innovation that improves the thermal efficiency of a Mont Sleeping Bag.
Radial Arc Baffles curve naturally around your body rather than bending around your body. When a down baffle (chamber) is bent or distorted, ripples in the fabric occur which will compress down and create cold spots. The Radial Arc Baffle System reduces bending and distortion and increases loft and warmth.
Tuck stitching is a construction method that conceals the stitch inside the sleeping bag thereby protecting it from abrasion and snagging. This is in comparison to top stitched seams where each stitch is exposed. Tuck stitched seams are also more water resistant than top stitched seams, again because the seam is concealed internally.
Tuck stitching attaches the lock-knit baffle fabric to a small fold in the shell material. Tuck stitching joins three layers of fabric making for a much stronger seam than top stitching that only joins two.
The Z-Force Compression Stuff Sack is the original and only stuff sack that utilises mechanical advantage to compress gear smaller with less effort. Three compression straps in pulley configuration compress your gear from both ends with a single pull of each. Pack your gear smaller than ever with less effort.
We don't sell gear we don't use
On orders over $99, excluding some bulky items
Est. 1981
Available on phone & email
