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Absolute Zero Suit - Men's
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Built for summit pushes, the Absolute Zero Suit delivers uncompromising warmth and protection at altitude
What Our Gearhead® Experts Are Saying:
"I’ve trusted this suit above 7,000 meters where mistakes aren’t an option. The warmth-to-weight balance is unreal, and the mobility stands out when you’re climbing in full winter conditions. The oxygen-mask compatible collar and internal suspenders aren’t gimmicks—they make long summit days more efficient and comfortable when everything else is going wrong."
When the mountain demands everything you’ve got, we reach for the Absolute Zero Suit from Mountain Hardwear. Born from collaboration with elite alpinists and tested in the Khumbu Valley, this suit is designed for the moments when retreat isn’t part of the plan. From brutal pre-dawn starts to exposed summit ridges, it surrounds us with confidence, letting us focus on each step upward instead of the cold creeping in.
The Pertex Diamond Fuse shell balances durability with weight savings, while reinforced panels in high-wear zones stand up to ice, rock, and endless transitions. Inside, box-wall baffles packed with 800-fill RDS-certified down trap serious heat without restricting movement. Thoughtful details like extended underarm vents, an oxygen-mask compatible collar, and an internal suspender system make this a purpose-built tool for high-altitude climbing where efficiency, warmth, and reliability define success.
Details
- High-altitude expedition suit for alpine climbing and summit pushes
- Pertex Diamond Fuse shell balances low weight with extreme durability
- Reinforced panels at elbows, knees, seat, and hem for abrasion resistance
- 800-fill RDS-certified down delivers maximum warmth in severe cold
- Box-wall baffle construction minimizes cold spots at altitude
- Oxygen mask compatible collar with stow feature for summit days
- Extended underarm vent zippers for heat management on the move
- Internal suspender system improves comfort during long pushes
- Item #MHWZAID
- Material
- Pertex 20D Diamond Fuse ripstop, Pertex 50D reinforced panels
- Insulation
- 800-fill RDS®-certified Down
- Fit
- regular
- Hood
- fixed, insulated
- Venting
- extended underarm zip vents
- Activity
- climbing, mountaineering, winter camping
- Manufacturer Warranty
- limited lifetime
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Frequently Asked Questions
How should I size the Mountain Hardwear Absolute Zero Suit for climbing layers?
The men’s regular fit is designed to accommodate expedition layers, while the internal suspender system helps keep the one-piece suit positioned during movement. Use the linked men’s size chart and your body measurements to choose a size; women should compare measurements rather than assume equivalent sizing.When is the Mountain Hardwear Absolute Zero Suit best suited to alpine use?
Its insulated down construction is aimed at high-altitude climbing, summit pushes, and winter camping in very cold, mostly dry conditions. For prolonged rain or wet snow, pair it with a waterproof shell layer to protect the down insulation.How does the Absolute Zero Suit compare with a typical ski suit or hardshell?
The Absolute Zero prioritizes expedition warmth, with 800-fill down in box-wall baffles, rather than the lighter, more versatile protection of a general-purpose hardshell. Its one-piece insulated design suits severe cold and stationary alpine periods, but can feel excessive for ordinary hiking or active resort skiing.How should I set up the Mountain Hardwear Absolute Zero Suit for a summit push?
Layer it over your base and midlayers, adjust the internal suspenders for a secure fit, and use the extended underarm vents to release heat during strenuous movement. The adjustable collar accommodates an oxygen mask and can be stowed when it is not needed.How should I care for the down insulation and shell on the Absolute Zero Suit?
Follow the sewn-in care label and use down-safe detergent; dry the suit completely at low heat with clean dryer balls, and avoid fabric softener. Store it loosely in a dry place rather than compressed for long periods.