River Island: June 2026

Based on our analysis of 1,705 River Island products, the average garment is 42.6% natural fibre. The most common single fibre is Polyester (in 55.7% of products). The remaining material is typically synthetic — polyester, polyamide, or acrylic.

Sometimes — cotton appears in 38.9% of the 1,705 River Island products we analyzed, but it's usually blended with synthetics. Only 30% of items are nearly all-natural (95%+ natural fibre), so check the composition before assuming a piece is pure cotton.

Effectively no. We didn't find any River Island products that are 100% cotton (or near-pure, 95%+) in our database. Cotton at River Island is almost always blended with elastane, polyester, or other fibres.

47.3% of River Island products are polyester-heavy, meaning polyester makes up 50% or more of the garment. This is above average for fast fashion retailers.

47.3% of River Island products are polyester-heavy (50%+ polyester). Average natural fibre content is 42.6%, so the rest of the catalog is mixed.

30% of River Island products are nearly all-natural (95%+ natural fibre). A decent portion of their range avoids synthetic fibres entirely.

Fabric composition is one factor in sustainability. With an average of 42.6% natural fibre, River Island is below average on this measure. Natural fibres generally biodegrade and shed fewer microplastics than synthetics.