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Boreal G1 Expe Mountaineering Boot
  • Boreal G1 Expe Mountaineering Boot
  • Boreal G1 Expe Mountaineering Boot
  • Boreal G1 Expe Mountaineering Boot
  • Boreal G1 Expe Mountaineering Boot

G1 Expe


My vote: None ( 6 avg )


The G1 Expe is the result of an ongoing dedication to make the finest high altitude boots in the world. Boreal understands that at the rarefied extremes of high altitude mountaineering the right equipment can make all the difference and this is why G1 Expe has been carefully designed, field tested and refined to guarantee exceptional levels of performance and reliability, without compromise.

G1 Expe is a triple layer boot consisting of an integrated outer gaiter, mid layer ‘shell’ and a removable inner bootie. The outer gaiter has a soft and comfortable elasticated cuff with both zip and strap closures for failsafe reliability. The lower portion of the gaiter is insulated with encapsulated layers of triple Thinsulate™ and polyethylene and is reinforced with an extremely rip resistant material in the high wear zones.  A new synthetic rand material has been used which is lighter and warmer than rubber and won’t perish in the high U.V light conditions found at high altitude.  The outer surface of the mid-layer boot in constructed from entirely from lightweight synthetic textile and lined with a tough and waterproof/breathable Cordura reinforced laminate. Sandwiched between is a 6mm layer of EVA foam for excellent thermal insulation. Our new ‘Tanka’ lace closure system is simple, secure and easy to manage while wearing gloves.

The all new inner bootie is made from a very lightweight and extremely warm triple layer laminate material comprising of an outer polyurethane layer, heat reflecting aluminum film and an inner layer of insulating EVA foam. Triple Thinsulate™ layers fully surround the foot providing yet more insulation with no cold spots and a fully waterproof breathable Boreal Dry-Line® lining guarantees to keep your feet dry. The ‘Tanka’ and strap closure is easy to use and is adjustable around the instep area for a custom fit. A new much lighter sole unit module has been developed with dual density crampon attachment lugs, hard at the back for a positive crampon fit and soft at the front which provides welcome vibration absorption when front pointing on hard ice. Our ultra lightweight yet rigid carbon fiber composite midsole provides a considerable weight saving and an incredibly lightweight low density Vibram Betulla outsole with is designed for optimum performance above the snow line completes the package.

Retail price

US$ 1,100.00
Boot Weight

Half Pair - size 7 UK
1305 grams (2 lb 14 oz)

Full Pair - size 7 UK
2610 grams (5 lb 12.1 oz)

Single or Double boot Double
Boot Stiffness Rigid
Best Uses Best Uses: 8000 Meter Peaks, High Altitude Expedition Mountaineering ­
Crampon Compatability Toe + heel bail - all crampons styles will work (universal, semi-auto, and auto)
Boot Features Built-in gaiter
Lock-off lacing

UK: 4.5 - 12

Materials & Construction Upper: Lightweight and extremely insulative triple layer laminate

Gaiter: Waterproof and highly breathable material with waterproof membrane, Cordura waterproof breathable lining

Shell: One piece lightweight Teramida with Lorica and neoprene ­

Liner: Dry-Line® for waterproofness

Insole: PBG-680 carbon composite midsole with lateral torsion control

Midsole: Dual density EVA and PU (polyurethane)

Sole: Vibram Betulla ­
Warranty ­

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