KRILLOINDEX

where can I buy thermal base layers for skiing online in the US?

We asked ChatGPT and Gemini this exact question in October 2026, as a shopper in the United States would. These are the stores they named, most named first.

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The stores AI named

  1. REI
  2. Backcountry
  3. Evo
  4. Outdoor Research
  5. Patagonia
  6. Smartwool
  7. Icebreaker
  8. Helly Hansen
  9. LL.Bean
  10. Duluth Trading
  11. Sierra
  12. Steep & Cheap
  13. REI Co-op
  14. Kari Traa
  15. Christy Sports

From our monthly measurement for winter sports, ski and snowboard in the United States. Marketplaces and platforms are left out. AI answers change; this is a snapshot, not an endorsement. How we measure.

See the full ranking for winter sports, ski and snowboard ›

Other questions shoppers ask

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