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Arcteryx Acrux AR Mountaineering Boot
  • Arcteryx Acrux AR Mountaineering Boot
  • Arcteryx Acrux AR Mountaineering Boot
  • Arcteryx Acrux AR Mountaineering Boot
  • Arcteryx Acrux AR Mountaineering Boot
  • Arcteryx Acrux AR Mountaineering Boot

Acrux AR


My vote: None ( 3 avg )


A pinnacle of design for mountaineering, ice and mixed climbing, the Acrux AR is the lightest, most durable, and lowest profile insulated double boot available. AR: All-Round. Includes 1 pair of GORE-TEX HIGH-LINERS.

The task was to create the lightest, most durable, best fitting, lowest volume weatherproof double boot ever made. The Acrux AR is the result. Designed for mountaineering, ice and mixed climbing, the Acrux AR combines the light weight and low volume of a single boot with the insulation, protection and quick drying advantages of a double boot. The comfort and support of Arc’teryx Adaptive Fit technology, unique laminated construction, and a wide range of innovative components and materials are all leveraged to meet the dynamic needs of the alpine climber’s foot and the rigorous demands of extreme environments. Years in the making, the Acrux AR is an unprecedented achievement that meets the full spectrum of performance demands.

Climbers and professional mountain guides require use-specific performance across a range of alpine conditions and terrain. Their boot needs to provide support and security on mixed routes, ice climbs and glacial traverses. It needs to keep the foot warm, dry and comfortable, then dry quickly if moisture accumulates. It needs to withstand repeated use on rugged terrain. It needs to fit and provide a supportive platform. It needs to deliver all of this in a lightweight, low volume package for agility and freedom in extreme situations. Until now, some of these needs would have to be sacrificed to meet the others.

Arc’teryx took the time to develop and meld new technologies so that the Acrux AR could satisfy the range of climbers’ needs without compromise. Arc’teryx Adaptive Fit technology uses a removable bootie that employs stretch textiles and minimal seams to create an instant custom fit with no pressure. With protection extended beyond the cuff of the boot and the highest level of breathability in this category, the bootie’s GORE-TEX membrane optimizes climate control and waterproof benefit. The perforated PE foam’s quick dry properties improve comfort, and a rubberized sole allows the bootie to be used as a camp shoe. The PE inner shell is preformed to compliment the bootie’s Adaptive Fit performance while providing insulation and a secure foothold. Laminated Watertight™ construction and an exceptionally breathable GORE-TEX gaiter deliver total protection from water with a high level of abrasion and puncture resistance to offset potential damage from crampons and rock. The specially developed Vibram® AR outsole is designed for support and sure footedness. The tread and construction feature a semi-blocked toe, with anti-slip grooves, a medial climbing support zone, and heel created to provide braking on steep descents. The Vibram® Mont rubber compound maintains its performance in sub-zero conditions.

Retail price

US$ 750.00

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Boot Weight

Half Pair
940 grams (2 lb 1.1 oz)

Full Pair
1880 grams (4 lb 2.3 oz)

Single or Double boot Double
Boot Stiffness Rigid
Best Uses Best Uses: Technical Mountaineering, Alpine Climbing, 4-Season

Also designed for: Technical Ice and Mixed Climbing
Crampon Compatability Toe + heel bail - all crampons styles will work (universal, semi-auto, and auto)
Boot Features Vegan
Built-in gaiter
Variable volume
US: 7 - 13 (half sizes)
Materials & Construction ­­

Shell: 4mm 3D formed perforated PE foam

Footbed: Custom developed 3D moulded Ortholite™

Liner: GORE-TEX 3-Layer with 0,6 mm TPU (thermoplastic polyurethane) protection film

Insole: Carbon fiber with expanded PU (polyurethane) foam core

Midsole: Highly durable EVA foam midsole

Sole: Vibram® AR, Mont Compound ­
Warranty ­

No reviews yet.

Outdoor Gear Lab Gear Review rating 5/5

The Arc'teryx Acrux is the warmest boot in our review. A removable liner on a boot designed for altitudes less than 6000m is a unique and advantageous feature and gives this boot a level of versatility not found in comparable products. We experienced some serious durability issues but hope that they're not widespread. While this isn't a perfect contender for cold weather ice climbing, it does get the job done, and its other attributes make it uniquely qualified as an all-around cold weather mountain boot.

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