Thermal Insoles

$11.78 ~~$19~~ In stock

These are the insoles for the La Sportiva G-Summit Mountaineering Boot. Purchase the same size as your G-Summit. These insoles are NOT designed 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 (4.8 / 5 · 5 reviews)

Kevin ★★★★★ Oct 21, 2026

I was worried about finding insoles that actually fit my G-Summit boots, but these dropped right in with zero trimming. The extra warmth is noticeable even on chilly morning starts.

Chloe V. ★★★★★ Oct 20, 2026

Drop-in fit was flawless for my G-Summit boots, no slippage or bunching even on the steepest sections. My toes stayed noticeably warmer during a cold pre-dawn start, which made a real difference when we hit the glacier.

John ★★★★★ Oct 19, 2026

I was worried about heat loss on my summit attempt, but these insoles fit my mountaineering boots perfectly and kept my feet noticeably warmer during the long, cold belays. The material is denser than standard insoles, which gave me better support on uneven terrain.