ViWear Sustainability Challenge: How Well Do You Know Fashion’s Environmental Cost?
Take the five-question ViWear sustainability challenge from Welcome Week at Vrije Universiteit Amsterdam. Of the 120 students who took part, only two answered all five questions correctly. The average score was 16%.
Sustainability is one of fashion’s most familiar words. We see it on clothing labels, campaign pages and resale platforms, but knowing the language is not necessarily the same as knowing the facts.
During one of ViWear’s Welcome Week events at Vrije Universiteit Amsterdam this August, we asked 120 students to take a five question quiz on fashion and its environmental impact. Only two participants answered every question correctly. Across the group, the average score was just 16 percent, with most students getting either none or one of the questions right.
The result turned a simple campus challenge into a much more interesting conversation. Students who came over expecting a quick quiz often stayed to talk about the answers, and many were surprised by the scale of fashion’s environmental impact. That surprise was perhaps the most revealing result of all.
Clothes are among the most ordinary things in our lives. We buy them, wear them and eventually clear them out, yet much of what happens before and after they enter our wardrobes remains remarkably easy to overlook.
Understanding what we already consume is a useful place to begin
For ViWear, the challenge also touched on something central to the way we think about fashion. Our work begins with the wardrobe people already have: the clothes they own, the combinations they can create and the decisions they make before adding something new.
A quiz will not make fashion sustainable, and neither will a piece of technology. But understanding what we already consume is a useful place to begin.
Take the ViWear sustainability quiz
The same five questions we asked at VU are below. Give it a go.
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Question 01
Never even used?
Approximately how many tonnes of textiles are destroyed in Europe each year before ever being used for their intended purpose?
- A. 50,000 tonnes
- B. 500,000 tonnes
- C. 5 million tonnes
- D. 50 million tonnes
Reveal answer
B. Approximately 500,000 tonnes. This is a rounded quiz answer: the European Environment Agency reports an estimated range of 264,000 to 594,000 tonnes destroyed annually before use. Source: EEA textile value chain briefing.
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Question 02
How much do we consume?
On average, how many kilograms of clothing, footwear and household textiles did one EU resident consume in 2022?
- A. 7 kg
- B. 12 kg
- C. 19 kg
- D. 31 kg
Reveal answer
C. 19 kg per EU resident in 2022, covering clothing, footwear and household textiles. Source: EEA consumption indicator.
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Question 03
How much textile waste is produced worldwide every year?
- A. 92,000 tonnes
- B. 920,000 tonnes
- C. 9.2 million tonnes
- D. 92 million tonnes
Reveal answer
D. An estimated 92 million tonnes worldwide each year. Source: UNEP, International Day of Zero Waste 2025.
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Question 04
How much water does the textile industry use each year?
Measured in Olympic swimming pools.
- A. 86,000 pools
- B. 860,000 pools
- C. 8.6 million pools
- D. 86 million pools
Reveal answer
D. An estimated 86 million Olympic-sized swimming pools per year. Source: UNEP Annual Report 2025.
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Question 05
Fashion’s climate impact
Approximately what share of global greenhouse gas emissions comes from the fashion and textiles sector?
- A. 0.2 to 0.8%
- B. 2 to 8%
- C. 12 to 18%
- D. 20 to 30%
Reveal answer
B. An estimated 2 to 8% of global greenhouse gas emissions. Source: UNEP Annual Report 2025.