Brandwave

REI Co-op vs Western Mountaineering:Which is more popular?

In September 2026, REI Co-op had more branded searches than Western Mountaineering among sleeping bag brands worldwide. REI Co-op had about 74,000 branded searches, while Western Mountaineering had 9,900. REI Co-op made up 7.5% of all sleeping bag brand searches we track, and Western Mountaineering accounted for 1%. When we asked ChatGPT and Google AI Overviews about sleeping bag brands, REI Co-op appeared in four of the five answers and Western Mountaineering in three. REI Co-op was mentioned before Western Mountaineering in two out of three answers.

Among sleeping bag brands worldwide in September 2026

Who do people search for more?

REI Co-op, about 7 searches for every 1 for Western Mountaineering

REI Co-op 74K searchesWestern Mountaineering 9.9K searches

Who does AI mention more?

REI Co-op, mentioned in 4 of 5 answers, Western Mountaineering in 3

REI Co-op in 4 of 5Western Mountaineering in 3 of 5

Who does AI recommend more?

REI Co-op, named ahead of Western Mountaineering in 2 of 3 answers

REI Co-op first in 2Western Mountaineering first in 1

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Top sleeping bag brands in ChatGPT and Google AI Overviews

In three ChatGPT questions and two Google AI Overviews, REI Co-op was mentioned in four out of five: in all three ChatGPT answers and in one of the two Google AI Overviews. Western Mountaineering was mentioned in three out of five: in two of the three ChatGPT answers and in one of the two Google AI Overviews. REI Co-op was listed before Western Mountaineering in two out of three answers.

Most recommended by AI

Brands get a higher ranking if they are mentioned earlier in the answers.

  1. REI Co-op1st
  2. Marmot2nd
  3. Sea to Summit3rd
  4. Nemo4th
  5. Western Mountaineering5th
  6. Forclaz6th
  7. Big Agnes7th
  8. Therm-a-Rest8th
  9. Exped9th
  10. Kathmandu–
  11. +1 more

Mentioned by AI

Each dot is one answer, filled in when that answer mentions the brand.

  • REI Co-op4 of 5Named in 3 of 3 ChatGPT answersNamed in 1 of 2 Google answers
  • Western Mountaineering3 of 5Named in 2 of 3 ChatGPT answersNamed in 1 of 2 Google answers
  • Marmot3 of 5Named in 3 of 3 ChatGPT answersNamed in 0 of 2 Google answers
  • Nemo3 of 5Named in 2 of 3 ChatGPT answersNamed in 1 of 2 Google answers
  • Sea to Summit2 of 5Named in 2 of 3 ChatGPT answersNamed in 0 of 2 Google answers
  • Forclaz2 of 5Named in 2 of 3 ChatGPT answersNamed in 0 of 2 Google answers
  • Big Agnes2 of 5Named in 2 of 3 ChatGPT answersNamed in 0 of 2 Google answers
  • Exped1 of 5Named in 1 of 3 ChatGPT answersNamed in 0 of 2 Google answers
  • Therm-a-Rest1 of 5Named in 1 of 3 ChatGPT answersNamed in 0 of 2 Google answers
  • Kathmandu0 of 5Named in 0 of 3 ChatGPT answersNamed in 0 of 2 Google answers

+1 more

See every answer about sleeping bag brands

5 answers

Not named in any answer:

Brands are shown in the order each answer named them. The survey took place in the United States on October 21, 2026.

Is REI Co-op or Western Mountaineering more popular in search?

This chart shows how often people search Google for REI Co-op and Western Mountaineering by name. Each line represents a brand's share of searches for all 11 sleeping bag brands we track, month by month, from English-language searches worldwide.

REI Co-op and Western Mountaineering among sleeping bag brands worldwide, by month

Share of searches by month for REI Co-op, Western Mountaineering. The figures are in the table below the chart.

View monthly share of searches table
MonthKathmanduMacpacREI Co-opSea to SummitExpedForclazTherm-a-RestBig AgnesWestern MountaineeringMarmotNemo
Oct 202560.1%12.1%6.6%5.4%3.6%5.4%3%2.4%1.1%0.32%0.06%
Nov 202559%14.4%7.9%5.3%2.9%4.3%2.9%1.9%1.1%0.26%0.06%
Dec 202560.5%14.8%8.1%4.4%2.4%4.4%2.4%1.6%0.89%0.26%0.05%
Jan 202656.5%13.9%7.6%6.2%3.4%5.1%3.4%2.3%1.2%0.3%0.06%
Feb 202655.9%13.7%7.5%6.2%4.1%5%3.4%2.8%1%0.29%0.07%
Mar 202661.5%12.3%6.8%5.5%3.7%3.7%3%2.5%0.74%0.22%0.07%
Apr 202661%14.9%5.5%5.5%3%3.7%3%2.5%0.6%0.27%0.07%
May 202658.4%14.3%6.4%6.4%3.5%3.5%3.5%2.9%0.7%0.31%0.09%
Jun 202662.3%15.3%4.6%5.6%3.1%3.1%3.1%2.1%0.5%0.22%0.08%
Jul 202658.3%14.2%5.2%7.8%3.5%3.5%3.5%2.9%0.7%0.25%0.09%
Aug 202659.1%11.8%6.5%7.9%3.6%3.6%3.6%2.9%0.71%0.26%0.11%
Sep 202655.6%13.7%7.5%7.5%4.1%4.1%3.3%2.7%1%0.36%0.13%

How has the REI Co-op and Western Mountaineering comparison changed over the last 12 months?

3 findings

How did search popularity change for sleeping bag brands worldwide in September 2026?

2 changes

  1. In September 2026, REI Co-op overtook Sea to Summit to rank 3rd among sleeping bag brands worldwide, with 7.5% of the searches.

  2. Estimated monthly branded searches for Western Mountaineering worldwide fell 18.2% over 12 measured months, from 12.1K to 9.9K in September 2026.

How are branded searches counted?

2 search terms

Brandwave collects information about searches that people make online using REI Co-op’s and Western Mountaineering’s names. When viewed over time, estimated search volumes for these branded terms can be used to understand whether interest in the brands is growing, holding steady, or fading.

REI Co-op

1 branded search term

  • rei co-op

Western Mountaineering

1 branded search term

  • western mountaineering

How the Brand Demand Index is measured

Other head-to-heads among sleeping bag brands

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