4001 GTX


An ultra-technical mountaineering boot, perfect for altitudes of up to 4000 metres, crossing glaciers and climbing on ice, thanks to its full compatibility with automatic crampons, ideal in particularly cold conditions. Ultralight and thermal, the 4001 GTX has a Gore-Tex® Insulated Comfort Footwear membrane to guarantee the utmost protection against the elements, impermeability and breathability, raising the level of comfort inside the boot.
The rubber strip around the boot is made with Diamond Technology, an exclusive polyurethane material offering unmatched scratch resistance. Protective gaiters and Easy Zip waterproof closure. Fibreglass and aluminium mounted insole for the utmost rigidity, especially when using crampons. Another exclusive technology appears in the midsole, with a Smart PU component, a polyurethane compound that reacts to temperature, hardening the heel area in the presence of rigid temperatures (facilitating use of crampons) and softening when temperatures are milder to provide better cushioning when walking.
Vibram® Teton sole designed specifically for mountaineering and climbing on ice: solid areas at the toe and heel guarantee better hold and greater safety, while the adhesive compound maintains good grip under all conditions and on all surfaces.

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Last Mountain PRO LAST
Construction Lasting
Insole board STIFF (Glass Fiber + Aluminium sheet)
Upper Fabric
Lining GORE-TEX Insulated Comfort Footwear
Footbed Felt + Foam + Textile + Moulded EVA Heel insert
Midsole Bi-density Smart PU + TPU insert
Outsole Vibram® Teton - 5 mm LUG
Weight 1/2 pair 860gr
Size range 4-12.5 UK (with half sizes)
Shoes height High


gore-tex® insulated comfort footwear


GORE-TEX Insulated Comfort Footwear keeps feet dry, warm and
protected by being durably waterproof and breathable and is an
engineered system which provides leading climate comfort. It is ideal for
cold conditions and winter outdoor activities.

Main features:

• Durably waterproof and breathable
• Optimized climate comfort
• For cold to very cold conditions
• For a wide range of outdoor activities
• For maximum heat retention.

vibram® teton - mont compound

TETON is one of the newest Vibram mountaneering soles. The rubber cleats, inspired by the legendary Vibram® Carrarmato, guarantee traction
on particularly uneven terrain while the delineated heel offers braking on steep slopes and moving surfaces. Teton is perfect for demanding trekking,
especially at high altitudes.

asymmetrical multiproof zip closure

Easy to close, it prevents water from getting inside the boot and fits foot and ankle in the most ergonomic

diamond technology

The protective full rand is made of a polyurethane component providing increased abrasion-resistance to the boot.