Thread Report · 434 products analyzed · Updated July 20, 2026
What is Sandro made of?
It depends what you buy. Sandro is a mixed bag — some categories are mostly natural, others are mostly plastic. Here's where to shop smart.
According to Fibr's Thread Report (July 2026), 16.6% of Sandro's 434 analysed products are majority-synthetic, with an average natural-fibre content of 55.8%.
Sandro's t-shirts are 92.8% natural fibre, but their dresss are just 33.6%. That's a 59-point gap — where you shop within Sandro matters as much as whether you shop there at all.
The full picture on Sandro.
Sandro sits in the middle of the pack with an average of 55.8% natural fibre across 434 products — a mix of natural and synthetic. Only 16.6% of products are polyester-heavy — relatively low compared to many retailers. 27.6% of products are nearly all-natural (95%+ natural fibre). The most common fibre across Sandro products is Viscose, appearing in 50% of items.
How Products Break Down
- 28.1%
Synthetic
<30% natural fibre · 122 products
- 41.2%
Blend
30–85% natural fibre · 179 products
- 30.6%
Natural
85–100% natural fibre · 133 products
Most Common Fibres (% of products containing)
Where to buy (and avoid).
Not all categories at Sandroare 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 434 products analyzed, Sandro averages 55.8% natural fibre content.
16.6% of Sandro products are majority polyester — that's 72 items made mostly from plastic.
Sandro t-shirts are their strongest category at 92.8% natural fibre (14 products).
Their weakest category: dresss at just 33.6% natural (77 products).
Only 27.6% of products (120 items) are 95%+ natural fibre.
| Category | Products | Avg Natural % |
|---|---|---|
| T-Shirt | 14 | 92.8% |
| Jeans | 46 | 91.4% |
| Sweater | 16 | 66.6% |
| Shirt | 37 | 66.5% |
| Coat | 7 | 64.5% |
| Jacket | 51 | 55.9% |
| Shorts | 16 | 55.1% |
| Pants | 43 | 53.5% |
| Skirt | 44 | 52.4% |
| Dress | 77 | 33.6% |
Sample Products
A selection of Sandro products from our database — from most natural to most synthetic. Click to view on the retailer's site.
The verdict.
Sandro isn't great, but it's not the worst either. You can find natural fibre products here if you know where to look. Stick to the categories we flagged as safe zones, and check individual items with Fibr before buying.
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Frequently asked questions.
What is Sandro clothing made of?
Based on our analysis of 434 Sandro products, the average garment is 55.8% natural fibre. The most common single fibre is Viscose (in 50% of products). The remaining material is typically synthetic — polyester, polyamide, or acrylic.
Is Sandro cotton?
Sometimes — cotton appears in 28.6% of the 434 Sandro products we analyzed, but it's usually blended with synthetics. Only 27.6% of items are nearly all-natural (95%+ natural fibre), so check the composition before assuming a piece is pure cotton.
Is Sandro 100% cotton?
Some pieces are. Of the 434 Sandro products we analyzed, 87 are 100% cotton (or near-pure, 95%+) — that's 20.0% of the catalog. The rest are blends.
How much polyester does Sandro use?
16.6% of Sandro products are polyester-heavy, meaning polyester makes up 50% or more of the garment. This is below average for fast fashion retailers.
Is Sandro mostly synthetic?
16.6% of Sandro products are polyester-heavy (50%+ polyester). Average natural fibre content is 55.8%, so the rest of the catalog is mixed.
Does Sandro use natural fabrics?
27.6% of Sandro products are nearly all-natural (95%+ natural fibre). Only a small fraction of their range avoids synthetic fibres entirely.
Is Sandro sustainable in terms of fabric?
Fabric composition is one factor in sustainability. With an average of 55.8% natural fibre, Sandro is about 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/sandro.json ↓
- Computed stats (JSON)
- /api/thread-report/sandro
- About the dataset
- How it's built & how to cite it
- LLM index
- /llms.txt
Suggested citation
Fibr Thread Report — Sandro, 2026-07-20. tryfibr.app/thread-report/sandro
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