Phantom 6000 Mountaineering Boot

Built for 6,000-meter expeditions and technical winter routes where frostbite is a real threat, the Phantom 6000 is our top double boot for serious high-altitude mountaineers. A removable PrimaLoft-and-aluminum-insulated inner bootie paired with a waterproof S-Tech gaiter keeps your feet warm and dry in extreme sub-zero conditions. Full automatic crampon compatibility and a carbon fiber insole round out a boot that means business on ice and mixed terrain.

• Removable insulated inner bootie uses PrimaLoft and aluminum insulation layers to maintain warmth in extreme sub-zero, high-altitude conditions
• High-abrasion S-Tech ceramic fabric outer shell with Flex-Seal spiral zipper blocks snow, ice, and spindrift while eliminating ankle pressure points
• Carbon fiber insole delivers maximum torsional rigidity for precise crampon control at a fraction of the weight of traditional shanks
• Full step-in automatic crampon compatibility via front and rear TPU heel welts — works with technical ice climbing and expedition setups out of the box
• Vibram Precision Tech Roll outsole gives you confident grip on icy rock and mixed terrain where traction failures aren't an option