Birkenstock vs Isotoner:Which is more popular?
In September 2026, Birkenstock had more branded searches than Isotoner among slipper brands worldwide. Birkenstock had about 135,000 branded searches, while Isotoner had 8,100. Birkenstock made up 15.9% of all slipper brand searches we track, and Isotoner accounted for 0.96%. When we asked ChatGPT and Google AI Overviews about slipper brands, Birkenstock and Isotoner each appeared in one of the five answers. Birkenstock and Isotoner were each mentioned first in one of the two answers that named either.
Who do people search for more?
Birkenstock, about 17 searches for every 1 for Isotoner
Who does AI mention more?
Both were mentioned in 1 of 5 answers.
Who does AI recommend more?
Each is named first in 1 of 2 answers.
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Top slipper brands in ChatGPT and Google AI Overviews
In three ChatGPT questions and two Google AI Overviews, Birkenstock was mentioned in one out of five: in one of the three ChatGPT answers, but not in either of the two Google AI Overviews. Isotoner was mentioned in one out of five: not in any of the three ChatGPT answers, but in one of the two Google AI Overviews. Birkenstock and Isotoner were each listed first in one of the two answers that named either.
Most recommended by AI
Brands get a higher ranking if they are mentioned earlier in the answers.
Mentioned by AI
Each dot is one answer, filled in when that answer mentions the brand.
UGG5 of 5Named in 3 of 3 ChatGPT answersNamed in 2 of 2 Google answers
Dearfoams4 of 5Named in 2 of 3 ChatGPT answersNamed in 2 of 2 Google answers
Haflinger2 of 5Named in 2 of 3 ChatGPT answersNamed in 0 of 2 Google answers
L.L.Bean2 of 5Named in 2 of 3 ChatGPT answersNamed in 0 of 2 Google answers
Vionic2 of 5Named in 2 of 3 ChatGPT answersNamed in 0 of 2 Google answers- Birkenstock1 of 5Named in 1 of 3 ChatGPT answersNamed in 0 of 2 Google answers
Bombas1 of 5Named in 0 of 3 ChatGPT answersNamed in 1 of 2 Google answers
Glerups1 of 5Named in 1 of 3 ChatGPT answersNamed in 0 of 2 Google answers
Isotoner1 of 5Named in 0 of 3 ChatGPT answersNamed in 1 of 2 Google answers
Minnetonka1 of 5Named in 0 of 3 ChatGPT answersNamed in 1 of 2 Google answers
See every answer about slipper brands
5 answers
Asked ChatGPT
“Which slipper brand should I buy?”
Asked ChatGPT
“What are the best slipper brands?”
Asked ChatGPT
“What's the best slipper brand for keeping feet warm in winter?”
Searched Google, AI Overview
“slippers”
Searched Google, AI Overview
“mens slippers”
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 25, 2026.
Is Birkenstock or Isotoner more popular in search?
This chart shows how often people search Google for Birkenstock and Isotoner by name. Each line represents a brand's share of searches for all 13 slipper brands we track, month by month, from English-language searches worldwide.
Share of searches by month for Birkenstock, Isotoner. The figures are in the table below the chart.
View monthly share of searches table
| Month | UGG | Birkenstock | Bombas | Glerups | Haflinger | L.L.Bean | Vionic | Dearfoams | Isotoner | Minnetonka | Mahabis | Giesswein | EMU Australia |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Oct 2025 | 70.4% | 9.5% | 7.7% | 2.9% | 1.6% | 2.3% | 1.6% | 0.85% | 0.85% | 1.3% | 0.46% | 0.38% | 0.25% |
| Nov 2025 | 72.6% | 5.3% | 11.9% | 2% | 1.3% | 2.4% | 1.1% | 0.72% | 0.59% | 1.3% | 0.32% | 0.32% | 0.17% |
| Dec 2025 | 67.9% | 5% | 13.6% | 2.7% | 1.5% | 4.1% | 1.2% | 1% | 0.67% | 1.5% | 0.3% | 0.25% | 0.16% |
| Jan 2026 | 59.8% | 9.8% | 12% | 4.4% | 2.4% | 4.4% | 2% | 1.3% | 1.1% | 1.6% | 0.59% | 0.48% | 0.21% |
| Feb 2026 | 59.4% | 14.5% | 9.8% | 4.4% | 2% | 2.9% | 2% | 1.1% | 1.1% | 1.6% | 0.71% | 0.48% | 0.21% |
| Mar 2026 | 56% | 20.6% | 7.5% | 4.1% | 1.8% | 2.3% | 2.3% | 1% | 1.2% | 1.5% | 0.82% | 0.44% | 0.37% |
| Apr 2026 | 50.1% | 22.4% | 8.2% | 5.5% | 2.5% | 2% | 3% | 1.1% | 1.3% | 1.3% | 1.3% | 0.59% | 0.59% |
| May 2026 | 49% | 26.9% | 6.6% | 4.4% | 2.4% | 1.6% | 2.9% | 1.3% | 1.3% | 1.1% | 1.3% | 0.48% | 0.72% |
| Jun 2026 | 46.6% | 31.3% | 6.3% | 3.4% | 2.3% | 1.5% | 2.8% | 1% | 1.5% | 1.3% | 1% | 0.44% | 0.56% |
| Jul 2026 | 51.6% | 28.3% | 5.7% | 3.1% | 2.1% | 1.4% | 2.5% | 1.1% | 1.4% | 0.92% | 0.92% | 0.34% | 0.5% |
| Aug 2026 | 58.5% | 21.5% | 6.4% | 3.5% | 1.9% | 1.6% | 1.9% | 0.86% | 1.3% | 1% | 0.86% | 0.3% | 0.3% |
| Sep 2026 | 64.9% | 15.9% | 5.8% | 3.9% | 1.7% | 1.7% | 1.7% | 0.96% | 0.96% | 0.96% | 0.64% | 0.34% | 0.28% |
Birkenstock and Isotoner sell other things too, so only their searches that name this product count here, like “birkenstock slippers”.
How has the Birkenstock and Isotoner comparison changed over the last 12 months?
3 findings
- Birkenstock was ahead of Isotoner in every measured month of the 12 months ending September 2026.
- Across the 12 months ending September 2026, Birkenstock’s share of searches among slipper brands worldwide moved from 9.5% to 15.9%, and its estimated monthly branded searches held steady at 135K.
- Across the 12 months ending September 2026, Isotoner’s share of searches among slipper brands worldwide moved from 0.85% to 0.96%, and its estimated monthly branded searches moved from 12.1K to 8.1K.
How did search popularity change for slipper brands worldwide in September 2026?
2 changes
In September 2026, Birkenstock lost share of searches among slipper brands worldwide, from 21.5% to 15.9%.
Isotoner’s share of searches among slipper brands worldwide has lost ground for 3 months in a row, from 1.5% to 0.96% in September 2026.
How are branded searches counted?
2 search terms
Brandwave collects information about searches that people make online using Birkenstock’s and Isotoner’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.
Birkenstock
1 branded search term
- birkenstock slippers
Isotoner
1 branded search term
- isotoner slippers
Other head-to-heads among slipper brands
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