La Sportiva G-Summit Boots

The La Sportiva G-Summit sets a new standard for technical high-altitude mountaineering, combining exceptional warmth, lightweight performance, and modular versatility in a single platform. Designed for demanding alpine objectives, cold-weather ascents, and extended expeditions, the G-Summit adapts to changing conditions and user needs through its innovative convertible design.

Built to function as both an ultrawarm single boot and a lightweight double boot, the G-Summit features a removable liner and thermal insole system that allows mountaineers to customize insulation levels based on temperature, altitude, and expedition duration. Whether tackling technical alpine routes, glaciated peaks, or high-altitude expeditions, the G-Summit delivers the warmth, protection, and precision required for extreme mountain environments.

At the core of the boot is La Sportiva's patented Core-Wrap™ technology, which maximizes thermal efficiency while minimizing weight. The integrated BOA® Fit System provides fast, precise adjustments even while wearing gloves, making it easy to adapt fit and performance in harsh conditions. Underfoot, the Vibram® Ice-Tech™ outsole and Vibram® Dura Step rubber compound deliver exceptional traction and durability on snow, ice, rock, and mixed terrain, while maintaining reliable performance in cold and wet conditions.

Engineered for technical mountaineering and built for long-term durability, the resoleable G-Summit offers a sustainable solution for climbers who demand elite performance across multiple seasons and objectives.

La Sportiva G-Summit Boots Features

• Convertible design functions as either a warm single boot or a lightweight double boot
• Removable liner and thermal insole system allow insulation customization for varying conditions
• Patented Core-Wrap™ technology maximizes warmth while maintaining an ultralight feel
• BOA® Fit System enables quick, precise adjustments with gloves on in cold-weather environments
• Optional liner addition increases insulation for high-altitude expeditions and extreme temperatures
• Vibram® Dura Step rubber compound delivers outstanding grip and durability in wet and cold conditions
• Vibram® Ice-Tech™ outsole features a dual-zone tread pattern optimized for climbing efficiency and mountain travel
• Compatible with automatic and semi-automatic crampons
• Resoleable construction extends product lifespan and reduces environmental impact
• Wide fit provides comfort during long days in the mountains and multi-day expeditions

Technical Specifications

• Weight: 29.2 oz / 830 g (per boot)
• Last: Nepal
• Fit: Wide

Upper

• Abrasion-resistant fabric
• TPU mudguard shield
• Weatherproof zipper
• Water-repellent internal gusset
• Core-Wrap™ inner shell
• TPU heel and toe caps
• PU Techlite rand (lateral)
• Rubber rand (medial)
• Differentiated lacing system with BOA® M4 Dial

Inner Boot

• 3 mm thermo-reflective PE
• EVA single-density foam construction

Insole

• 5 mm removable thermal insole
• 5 mm Carbon Z-Therm™ mounted insole

Sole

• Vibram® Ice-Tech™ outsole
• Climbing zone platform at the toe
• Impact Brake System™
• Vibram® Dura Step rubber compound
• TPU insert for front and rear crampon attachment

Ideal For

• High-altitude mountaineering
• Technical alpine climbing
• Glacier travel
• Mixed climbing
• Winter mountaineering
• Extended expeditions
• Cold-weather alpine objectives
• Fast-and-light technical ascents requiring maximum warmth-to-weight efficiency

Why Mountaineers Choose the G-Summit

The La Sportiva G-Summit stands out by offering a level of adaptability rarely found in technical mountaineering footwear. Its modular design allows climbers to configure the boot for specific objectives, transforming from a lightweight technical mountain boot into a highly insulated expedition-ready system. Combined with exceptional warmth, crampon compatibility, advanced traction, and a glove-friendly BOA® closure, the G-Summit is engineered for climbers pushing into the world's coldest and most demanding mountain environments.

We provide free shipping on all orders over $150 CAD, with some exceptions for oversized and overweight items. We ship to all provinces and territories using UPS, FedEx, Canpar, or Canada Post and provide you with a tracking number.

At this time, shipping to the U.S. is suspended until further notice. We apologize for any inconvenience.

• Orders under $150 + items on sale: Flat rate of $20.00
• Orders over $150: Free shipping within Canada (exceptions apply for oversized and overweight items)

Returns are accepted on regular-priced items within 10 business days, provided they are unused and in original condition with tags and packaging. Sale items and climbing/safety gear are final sale. Customers must contact the store for a return authorization (RA#) and are responsible for return shipping. Refunds are issued to the original payment method. Warranty claims for defective items can be directed to the store for manufacturer processing.

How do you ship?
We provide free shipping on all orders over $150 CAD, with some exceptions for oversized and overweight items. We ship to all provinces and territories using UPS, FedEx, Canpar, or Canada Post and provide you with a tracking number.

At this time, shipping to the U.S. is suspended until further notice. We apologize for any inconvenience.

• Orders under $150 + items on sale: Flat rate of $20.00
• Orders over $150: Free shipping within Canada (exceptions apply for oversized and overweight items)

Do you ship internationally?
We can. If you live outside Canada or the United-States of America, you can send us an email with the item you would like buy and your full address and we can get a quote from different courriers. Once we have an idea of the shipping cost, we will confirm with you the amount and then, we can proceed with phone order.