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The high-altitude boots La Sportiva G-Summit are the perfect choice for tough conditions. Compatible with semi-automatic crampons, waterproof and insulated, they provide excellent stability and support thanks to the 3D Flex and Double Heel™ systems.

Basic data

Brand La Sportiva
Country of origin of the brand Italy
Sport Tourism
Gender Male, Woman
Season Autumn/Winter
Leading colour Black
Model/product code G-Summit ZFMS085999100
Purpose High mountain
Code 2000064780

Product details

Upper material Fabric
Height of the upper High
Reinforcements At the toes
Fastening type Laces
Technologies 3D Flex System, Double Heel™, GORE-TEX® Performance Comfort Footwear, Vibram®
Weight 630 g

Outsole

Outsole Vibram®
Compatibility with crampons Semi-automatic machines

Protection

Waterproof Yes
Insulation Yes

Warnings and producer's data

Producer La Sportiva S.p.A. | Via Ischia 2, 38030 Ziano di Fiemme, Włochy | info@lasportiva.com

La Sportiva G-Summit mountain boots black/yellow (ZFMS085999100)

La Sportiva G-Summit black/yellow mountaineering boots are the perfect footwear for mountain expedition enthusiasts, offering reliability in challenging conditions. Thanks to the use of GORE-TEX® Performance Comfort Footwear technology, these boots guarantee excellent waterproofing, which is crucial during prolonged exposure to wet environments. Additionally, the insulation provides thermal comfort, making them an ideal choice for winter escapades.

Innovative technologies

The La Sportiva G-Summit mountaineering boots are equipped with a range of modern technologies that enhance user comfort. The 3D Flex System allows for better foot movement control, which is extremely important on difficult terrain. Additionally, the Double Heel™ technology supports the natural heel movement, improving stability on uneven surfaces. Compatibility with semi-automatic crampons increases their versatility and allows for safe movement on glaciers.

Durable construction

The Vibram® outsole provides excellent grip on various surfaces, which is invaluable during climbing. Toe reinforcements protect against mechanical damage, increasing the boots' durability. The high collar further stabilizes the ankle, which is essential on steep ascents. Laces as a fastening method allow for precise fitting to the foot, enhancing wearing comfort.

La Sportiva G-Summit - features:

  • Advanced GORE-TEX® Performance Comfort Footwear technology for reliable waterproofing;
  • Insulation providing thermal comfort in low temperatures;
  • 3D Flex System for better foot movement control;
  • Double Heel™ technology supporting natural heel movement;
  • Compatibility with semi-automatic crampons increasing versatility;
  • Durable Vibram® outsole for excellent grip;
  • Toe reinforcements protecting against mechanical damage;
  • High collar stabilizing the ankle on steep ascents;
  • Laces allowing precise fitting to the foot.
3D Flex System
Technology patented by Italian brand La Sportiva involving a special lacing system between the upper and lower part of the shoe. It ensures a perfect fit to the calf for optimal wearing comfort.
Double Heel™
Two-part heel construction in trekking shoes. The part located under the heel ensures less strain on the leg muscles during long hikes. The part located closer to the toes ensures better control when descending.
GORE-TEX® Performance Comfort Footwear
A type of iconic membrane with water repellent and windproof properties used in mountain trekking boots.
Vibram®
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La Sportiva G-Summit mountain boots black/yellow

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Size Sizes table
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Sizes table

    Below you will find information that will help you choose the right size when buying La Sportiva shoes. All you will need is a tailor's tape measure.

    EU size 33 33,5 34 34,5 35 35,5 36 36,5 37 37,5 38 38,5 39 39,5 40 40,5 41 41,5 42 42,5 43 43,5 44 44,5 45 45,5 46 46,5 47 47,5 48
    UK size 1 1,5 2 2 2,5 3 3,5 3,5 4 4,5 5 5,5 6 6 6,5 7 7,5 7,5 8 8,5 9 9,5 9,5 10 10,5 11 11,5 11,5 12 12,5 13
    US M Size 2 2,5 3 3 3,5 4 4,5 4,5 5 5,5 6 6,5 6,5 7 7,5 8 8,5 8,5 9 9,5 10 10,5 10,5 11 11,5 12 12,5 12,5 13 13,5 14
    US W Size 3 3 4 4 4,5 5 5,5 5,5 6 6,5 7 7,5 7,5 8 8,5 9 9,5 9,5 10 10,5 11 11,5 11,5 12 12,5 13 13,5 13,5      
    AB Foot length (cm) 21 21,3 21,6 22 22,3 22,6 23 23,3 23,6 24 24,3 24,6 25 25,3 25,6 26 26,3 26,6 27 27,3 27,6 28 28,3 28,6 29 29,3 29,6 30 30,3 30,6 31

    How to measure the length of your foot - instructions in 4 steps

    1. Prepare a sheet of paper and set it on a hard, non-slippery surface - it is best to tape it to the floor.

    2 Stand barefoot on a piece of paper - distribute your body weight evenly and set your foot straight.

    3. Mark the tip of the big toe and the back of the heel - preferably holding the pencil vertically.

    4. Take off the foot and measure the distance between the marks - this is the length of the foot. Repeat for the other foot and choose a larger measurement, matching it to the size chart.

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