M&S Collection Marks & Spencer Regular Fit Stretch Jeans with Stormwear Black

The jeans are made from durable denim, which typically contains a significant percentage of cotton. M&S sources its cotton through Better Cotton, organic, or recycled-certified methods.

The jeans contain around 20% polyester, which is a synthetic material. This contributes to the likelihood of microplastic leaching.

The inclusion of elastane or spandex for stretch is common in jeans, and it typically represents a small percentage, but it is still a synthetic material that can contribute to microplastic pollution.