Sustainable fashion has moved from niche to mainstream: the global secondhand market alone is now a $393 billion force, roughly 10% of all apparel spending. Yet the industry it is reacting to still produces up to 100 billion new garments a year and sends one truckload of textiles to landfill every second. Here are 48 verified statistics on where sustainable and slow fashion stand in 2026, each with its source.
Key sustainable fashion statistics (the editor's cut)
- The global secondhand apparel market is projected to reach $393 billion by 2030, growing twice as fast as apparel retail overall. (ThredUp)
- The fashion industry is responsible for about 10% of global carbon emissions, more than international flights and maritime shipping combined. (UNEP / Geneva Environment Network)
- Between 80 and 100 billion new clothing garments are produced worldwide every year. (UN)
- One truckload of textiles is wasted every second, and only 1% of clothing is recycled into new garments. (Ellen MacArthur Foundation)
- 79% of Gen Z consider sustainability when choosing which brands to buy. (Statista via Capital One Shopping)
- 73% of millennials say they are willing to pay more for sustainable brands. (HBR via TheRoundup)
- The global sustainable fashion market is estimated at ~$10.5 billion in 2026 and forecast to reach $39 billion by 2035. (GM Insights)
- 62% of Gen Z shopped secondhand in 2025, and 2 of every 5 items in the average Gen Z closet are pre-owned. (Capital One Shopping)
- The world produces about 92 million tons of textile waste every year. (TheRoundup)
Market size and growth
The global sustainable fashion market is estimated at roughly $10.5 billion in 2026 and forecast to reach $39 billion by 2035, a CAGR of 15.7%. Estimates vary by methodology, so treat any single figure as a range rather than a fixed number. (GM Insights)
A separate model values the market at $10,122.8 million in 2026, rising to $19,852.4 million by 2033 at a 10.1% CAGR. The spread between forecasts reflects how differently firms define "sustainable." (Coherent Market Insights)
North America held the largest regional share at about 30.5% in 2026, while apparel made up roughly 48% of the market by product type. (Coherent Market Insights)
Asia Pacific accounts for about 36% of the global ethical fashion market. (TheRoundup)
Sustainable products are growing 5.6 times faster than conventional ones. (TheRoundup)
The ethical fashion market's average annual growth rate is 8.3%, projected to accelerate to 9.7% a year by 2030. (TheRoundup)
A shift to circular textiles could create 18 million jobs by 2030. (IISD via TheRoundup)
Tackling fast fashion's harms could add $192 billion to the global economy by 2030. (UNCTAD via TheRoundup)
The environmental cost
The fashion industry is responsible for about 10% of global carbon emissions, more than all international flights and maritime shipping combined. (UNEP / Geneva Environment Network)
UNEP's own technical estimate puts the sector at 2 to 8% of global greenhouse gas emissions. The wide band shows how hard the industry is to measure. (UNEP)
Fashion generates roughly 2.1 billion tonnes of CO2 equivalent every year. (McKinsey via TheRoundup)
Without intervention, fashion's annual emissions could climb to 2.7 billion tonnes by 2030. (McKinsey via TheRoundup)
About 70% of fashion's emissions come from upstream activities like material production and processing. (McKinsey via TheRoundup)
Fashion is the second-biggest consumer of water and produces around 20% of global wastewater. (UNEP / Geneva Environment Network)
Textile production uses about 93 billion cubic meters of water a year. (UNEP via TheRoundup)
It takes roughly 2,000 gallons of water to make a single pair of jeans. (National Geographic via TheRoundup)
About 20% of global freshwater pollution comes from textile treatment and dyeing. (UN via TheRoundup)
Synthetic textiles account for 35% of the microplastics released into the ocean. (IUCN via TheRoundup)
Fashion and textiles are responsible for about 9% of the microplastic pollution reaching oceans each year. (UNEP)
Waste and overproduction
Between 80 and 100 billion new garments are produced globally each year. (UN via TheRoundup)
One truckload of textiles is landfilled or incinerated every second. (Ellen MacArthur Foundation)
Only 1% of the material used to make clothing is recycled into new clothing. (Ellen MacArthur Foundation)
About 87% of the total fiber input for clothing ends up incinerated or in landfill. (Ellen MacArthur Foundation via TheRoundup)
The world produces about 92 million tons of textile waste every year. (TheRoundup)
By 2030, textile waste sent to landfill is projected to hit 148 million tons, a 60% jump from 2015. (TheRoundup)
In the US, 66% of unwanted clothes are landfilled, fewer than 15% are recycled, and about 19% are burned. (TheRoundup)
The EPA reports 11.3 million tons of textiles were sent to US landfills in 2018, roughly 7.7% of all municipal solid waste landfilled. (EPA)
About 60% of all clothing materials are derived from plastic and fossil fuels. (Global Fashion Agenda via TheRoundup)
What shoppers say and how they pay
72% of US consumers are aware of sustainability issues in fashion. (McKinsey via TheRoundup)
55% of US consumers say they are interested in buying sustainable clothing. (McKinsey via TheRoundup)
48% of consumers say they do not know where to find sustainable clothing brands. That discovery gap is one of the biggest barriers to buying green. (McKinsey via TheRoundup)
59% of US apparel shoppers want the fashion industry to become more eco-friendly. (Capital One Shopping)
73% of millennials are willing to pay more for sustainable brands. (HBR via TheRoundup)
80% of consumers worldwide say they are willing to pay more for eco-friendly products. (PwC via Capital One Shopping)
In 2024, shoppers paid on average 26.6% more for products marketed as sustainable than for conventional ones. (NYU Stern via Capital One Shopping)
23% of Americans would buy more sustainable apparel if it were more widely available. (Capital One Shopping)
One in three US consumers would shop entirely at a sustainable store if one existed. (Genomatica via TheRoundup)
The generational shift
79% of Gen Z consumers consider sustainability when choosing which brands to buy, compared with 73% of millennials and 64% of Gen X. (Capital One Shopping)
Gen Z shoppers are 53.1% more likely to make a purchase based on sustainability than on brand name. (Capital One Shopping)
By 2027, millennials are projected to drive 41% of the eco-friendly fashion market, Gen Z 35%, and Gen X 18%. (Capital One Shopping)
The resale and secondhand boom
The global secondhand apparel market is projected to reach $393 billion by 2030, about 10% of all apparel spending and growing twice as fast as apparel retail overall. (ThredUp)
US fashion resale platforms generated an estimated $20 billion in sales in 2025, up 19.3% year over year. (Capital One Shopping)
Online resale specifically is expected to reach $40 billion by 2029, a 13% CAGR. (ThredUp)
Gen Z and millennials are set to drive more than 70% of secondhand market growth through 2030. (ThredUp)
62% of Gen Z shopped secondhand in 2025, and two of every five items in the average Gen Z closet are pre-owned. (Capital One Shopping)
75% of Gen Z say they bought pre-owned clothing specifically to reduce their consumption. (TheRoundup)
Greenwashing and the trust gap
23% of consumers want eco-friendly products but do not believe the sustainability claims brands make. (First Insight via Capital One Shopping)
93% of major fashion companies do not pay their garment workers a living wage. (Global Fashion Agenda via TheRoundup)
How shoppers are choosing sustainable brands
The data points to one clear tension: most shoppers want to buy better, but nearly half say they do not know where to find brands they can trust. That is why credible, curated shortlists matter more than ever. Buyers comparing options increasingly start from a vetted list of the best sustainable clothing brands rather than sifting through vague "eco" marketing on their own.
The pattern holds across categories and generations. With willingness to pay a premium highest among younger shoppers, and with 48% of consumers unsure where to look, the brands that win are the ones that make their materials, certifications, and supply chain easy to verify. A guide to the best sustainable clothing brands is a faster route to that shortlist than guessing from a label. And as resale goes mainstream, many shoppers now check a brand's durability and resale value before buying new at all.
Frequently asked questions
How big is the sustainable fashion market in 2026?
Estimates range from about $10.1 billion to $10.5 billion in 2026 depending on the research firm and how "sustainable" is defined, with forecasts running from roughly $20 billion by 2033 to $39 billion by 2035. The wide spread reflects differing methodologies, so it is best read as a fast-growing range rather than one fixed number. (GM Insights, Coherent Market Insights)
What percentage of carbon emissions does fashion produce?
Widely cited figures put fashion at about 10% of global carbon emissions, more than international flights and maritime shipping combined, though UNEP's own technical estimate is a lower 2 to 8%. The industry is genuinely hard to measure, which is why the numbers vary. (UNEP / Geneva Environment Network)
Are consumers really willing to pay more for sustainable clothing?
Surveys say yes: 73% of millennials and 80% of consumers worldwide report a willingness to pay more, and in 2024 shoppers paid on average 26.6% more for products marketed as sustainable. Actual behavior still lags stated intent, but the premium is real and measurable. (Capital One Shopping)
How much clothing actually gets recycled?
Very little. Only about 1% of the material used to make clothing is recycled into new clothing, and roughly 87% of total fiber input ends up incinerated or in landfill. (Ellen MacArthur Foundation)
How fast is the secondhand clothing market growing?
The global secondhand apparel market is projected to reach $393 billion by 2030, growing about twice as fast as apparel retail overall, with online resale alone expected to hit $40 billion by 2029. Gen Z and millennials are driving more than 70% of that growth. (ThredUp)
Which generation cares most about sustainable fashion?
Gen Z leads: 79% consider sustainability when choosing brands, versus 73% of millennials and 64% of Gen X, and Gen Z shoppers are 53.1% more likely to buy based on sustainability than on brand name. (Capital One Shopping)