Thread Report · 870 products analyzed · Updated July 20, 2026
What is Glassons made of?
Short answer: mostly plastic. Glassons relies heavily on synthetic fibres — 24.9% of their products are majority polyester. Here's the full breakdown.
According to Fibr's Thread Report (July 2026), 24.9% of Glassons's 870 analysed products are majority-synthetic, with an average natural-fibre content of 38.8%.
Glassons's jeanss are 99.9% natural fibre, but their dresss are just 18%. That's a 82-point gap — where you shop within Glassons matters as much as whether you shop there at all.
The full picture on Glassons.
Glassons leans heavily synthetic. Across 870 products, only 38.8% of fibre content on average is natural. About 24.9% of products are polyester-heavy, a notable but not dominant share. 22.1% of products are nearly all-natural (95%+ natural fibre). The most common fibre across Glassons products is Elastane, appearing in 53.8% of items.
How Products Break Down
- 51.5%
Synthetic
<30% natural fibre · 448 products
- 23.6%
Blend
30–85% natural fibre · 205 products
- 24.9%
Natural
85–100% natural fibre · 217 products
Most Common Fibres (% of products containing)
Where to buy (and avoid).
Not all categories at Glassonsare equal. Here's where the natural fibres are.
Safe Zones · 70%+ natural
Mixed Bag · 40–70% natural
Caution · under 40% natural
What we found.
Across 870 products analyzed, Glassons averages 38.8% natural fibre content.
24.9% of Glassons products are majority polyester — that's 217 items made mostly from plastic.
Glassons jeanss are their strongest category at 99.9% natural fibre (16 products).
Their weakest category: dresss at just 18% natural (44 products).
Only 22.1% of products (192 items) are 95%+ natural fibre.
| Category | Products | Avg Natural % |
|---|---|---|
| Jeans | 16 | 99.9% |
| T-Shirt | 21 | 84.1% |
| Hoodie | 8 | 82.5% |
| Coat | 5 | 53.7% |
| Sweater | 13 | 53% |
| Skirt | 68 | 38.2% |
| Jacket | 24 | 24.2% |
| Dress | 44 | 18% |
Sample Products
A selection of Glassons products from our database — from most natural to most synthetic. Click to view on the retailer's site.
The verdict.
Glassons is a tough sell if you care about natural fabrics. With 24.9% of products being polyester-heavy, most of what they sell is effectively plastic clothing. If you do shop here, be very selective and always check the composition.
Monthly Thread Reports
Get reports like this in your inbox.
We analyze thousands of products every month. Be the first to see new Thread Reports — fabric data nobody else publishes.
No spam. Unsubscribe in one click.
Frequently asked questions.
What is Glassons clothing made of?
Based on our analysis of 870 Glassons products, the average garment is 38.8% natural fibre. The most common single fibre is Elastane (in 53.8% of products). The remaining material is typically synthetic — polyester, polyamide, or acrylic.
Is Glassons cotton?
Sometimes — cotton appears in 29% of the 870 Glassons products we analyzed, but it's usually blended with synthetics. Only 22.1% of items are nearly all-natural (95%+ natural fibre), so check the composition before assuming a piece is pure cotton.
Is Glassons 100% cotton?
Some pieces are. Of the 870 Glassons products we analyzed, 179 are 100% cotton (or near-pure, 95%+) — that's 20.6% of the catalog. The rest are blends.
How much polyester does Glassons use?
24.9% of Glassons products are polyester-heavy, meaning polyester makes up 50% or more of the garment. This is below average for fast fashion retailers.
Is Glassons mostly synthetic?
24.9% of Glassons products are polyester-heavy (50%+ polyester). Average natural fibre content is 38.8%, so the rest of the catalog is still leaning synthetic in most cases.
Does Glassons use natural fabrics?
22.1% of Glassons products are nearly all-natural (95%+ natural fibre). Only a small fraction of their range avoids synthetic fibres entirely.
Is Glassons sustainable in terms of fabric?
Fabric composition is one factor in sustainability. With an average of 38.8% natural fibre, Glassons is below average on this measure. Natural fibres generally biodegrade and shed fewer microplastics than synthetics.
Use this data.
The Thread Report is openly licensed. Cite it, download it, query it directly — just link back to the source page.
- Last updated
- Raw dataset (JSON)
- info.tryfibr.app/glassons.json ↓
- Computed stats (JSON)
- /api/thread-report/glassons
- About the dataset
- How it's built & how to cite it
- LLM index
- /llms.txt
Suggested citation
Fibr Thread Report — Glassons, 2026-07-20. tryfibr.app/thread-report/glassons
Related reports.
Explore the Thread Report
Part of an openly-licensed dataset.
This page is one view of Fibr's Thread Report — fabric composition data for major fashion retailers, free to read and cite. Explore the rest:
Stop buying plastic by accident.
Fibr shows you what every garment is actually made of before you buy it. Green means natural fibre. Red means plastic.
Add to Chrome — It's freeFree forever. No account, no data collected, nothing to lose.