REI Co-op vs Sea to Summit:Which is more popular?
In September 2026, REI Co-op and Sea to Summit were level in searches among sleeping mat brands worldwide, with an estimated 74K branded searches each, at 31.3% of the total each. When we asked ChatGPT and Google AI Overviews about sleeping mat brands, REI Co-op and Sea to Summit each appeared in three of the five answers. Sea to Summit was mentioned before REI Co-op in three out of four answers that named either.
Who do people search for more?
REI Co-op and Sea to Summit are searched for about as often as each other.
Who does AI mention more?
Both were mentioned in 3 of 5 answers.
Who does AI recommend more?
Sea to Summit, named ahead of REI Co-op in 3 of 4 answers
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Top sleeping mat brands in ChatGPT and Google AI Overviews
In three ChatGPT questions and two Google AI Overviews, REI Co-op was mentioned in three out of five: in all three ChatGPT answers, but not in either of the two Google AI Overviews. Sea to Summit was mentioned in three out of five: in two of the three ChatGPT answers and in one of the two Google AI Overviews. Sea to Summit was listed before REI Co-op in three out of four answers that named either.
Most recommended by AI
Brands get a higher ranking if they are mentioned earlier in the answers.
Therm-a-Rest1st
Nemo2nd
Exped3rd- Sea to Summit4th
Klymit5th
REI Co-op6th
Mentioned by AI
Each dot is one answer, filled in when that answer mentions the brand.
- Exped5 of 5Named in 3 of 3 ChatGPT answersNamed in 2 of 2 Google answers
- Therm-a-Rest5 of 5Named in 3 of 3 ChatGPT answersNamed in 2 of 2 Google answers
- Nemo5 of 5Named in 3 of 3 ChatGPT answersNamed in 2 of 2 Google answers
- REI Co-op3 of 5Named in 3 of 3 ChatGPT answersNamed in 0 of 2 Google answers
- Sea to Summit3 of 5Named in 2 of 3 ChatGPT answersNamed in 1 of 2 Google answers
- Klymit3 of 5Named in 1 of 3 ChatGPT answersNamed in 2 of 2 Google answers
See every answer about sleeping mat brands
5 answers
Asked ChatGPT
“Which sleeping mat brand should I buy?”
Asked ChatGPT
“What are the best sleeping mat brands?”
Asked ChatGPT
“What's the best sleeping mat brand for camping comfort?”
Searched Google, AI Overview
“best sleeping mat”
Searched Google, AI Overview
“camping sleeping mat”
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 Sea to Summit more popular in search?
This chart shows how often people search Google for REI Co-op and Sea to Summit by name. Each line represents a brand's share of searches for all six sleeping mat brands we track, month by month, from English-language searches worldwide.
Share of searches by month for REI Co-op, Sea to Summit. The figures are in the table below the chart.
View monthly share of searches table
| Month | REI Co-op | Sea to Summit | Exped | Therm-a-Rest | Nemo | Klymit |
|---|---|---|---|---|---|---|
| Oct 2025 | 33.8% | 27.6% | 18.5% | 15.1% | 3.1% | 2% |
| Nov 2025 | 39.8% | 26.8% | 14.7% | 14.7% | 2.5% | 1.6% |
| Dec 2025 | 44.5% | 24.5% | 13.4% | 13.4% | 2.5% | 1.8% |
| Jan 2026 | 35.2% | 28.8% | 15.8% | 15.8% | 2.7% | 1.7% |
| Feb 2026 | 34% | 27.8% | 18.6% | 15.2% | 2.7% | 1.7% |
| Mar 2026 | 33.8% | 27.7% | 18.5% | 15.1% | 3.2% | 1.6% |
| Apr 2026 | 30.6% | 30.6% | 16.7% | 16.7% | 3.5% | 1.8% |
| May 2026 | 30.4% | 30.4% | 16.6% | 16.6% | 4.1% | 1.8% |
| Jun 2026 | 26.5% | 32.4% | 17.7% | 17.7% | 3.7% | 1.9% |
| Jul 2026 | 24.6% | 36.6% | 16.5% | 16.5% | 4% | 1.8% |
| Aug 2026 | 28.5% | 34.7% | 15.6% | 15.6% | 3.9% | 1.7% |
| Sep 2026 | 31.3% | 31.3% | 17.2% | 14% | 4.3% | 1.9% |
How has the REI Co-op and Sea to Summit comparison changed over the last 12 months?
3 findings
- The lead changed hands once in the 12 months ending September 2026: Sea to Summit took it in June 2026.
- Across the 12 months ending September 2026, REI Co-op’s share of searches among sleeping mat brands worldwide moved from 33.8% to 31.3%, and its estimated monthly branded searches held steady at 74K.
- Across the 12 months ending September 2026, Sea to Summit’s share of searches among sleeping mat brands worldwide moved from 27.6% to 31.3%, and its estimated monthly branded searches moved from 60.5K to 74K.
How did search popularity change for sleeping mat brands worldwide in September 2026?
2 changes
In September 2026, REI Co-op overtook Sea to Summit to become the leader among sleeping mat brands worldwide, with 31.3% of the searches.
In September 2026, Sea to Summit lost share of searches among sleeping mat brands worldwide, from 34.7% to 31.3%.
How are branded searches counted?
2 search terms
Brandwave collects information about searches that people make online using REI Co-op’s and Sea to Summit’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
Sea to Summit
1 branded search term
- sea to summit
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