G-Summit Liner

$64.08 ~~$89~~ In stock

The G-Summit Liner is the insulating liner compatible with the La Sportiva G-Summit. Purchase the same size as your G-Summit Boot. This liner is not intended to be used with other Mountaineering Boots.

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When it ships

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Standard Shipping: Handling (business days) 0–1; Transit (business days) 7–15.

Express Shipping: Handling (business days) 0–1; Transit (business days) 7–15.

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Delivery costs

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Standard Shipping · United States: $0.00

Express Shipping · United States: $3.99

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Returning an item

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United States · Return window (days after delivery): 30. Return method: By mail. Return postage: Seller pays.

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Customer Reviews (4.2 / 5 · 5 reviews)

Claire ★★★★★ Oct 20, 2026

I was skeptical about the insulation until I used these in sub-zero conditions, and the warmth was impressive without making my feet sweat. They click right into the G-Summit shell with no struggle.

Ellie Z. ★★★★★ Oct 19, 2026

The fit is perfect since I ordered the same size as my boots, and the insulation kept my feet warm during a cold morning ascent. No more numb toes on belay ledges.

Jason Y. ★★★★★ Oct 18, 2026

The fit is spot-on since I ordered the same size as my boots, and the insulation keeps my feet warm even on windy ridges. Makes a noticeable difference in comfort compared to just wearing thick socks.