Sure, it may not come up in a pub quiz, but it’s worth knowing.

Materials such as linen, hemp and bamboo are all eco-friendly because they use less energy, pesticides, fertilisers and water than other fabrics. Look out for certification from the Soil Association on organic products to guarantee your garbs have been made without harmful chemicals.

Others like lyocell (AKA Tencel) are produced using wood pulp from eucalyptus, which grows fast and doesn’t produce much pollution.

For those of you keen to make sure all your fabrics are cruelty-free as well as environmentally friendly, make sure you look out for brands that sell animal welfare-friendly materials like organic wool, vegan leather and vegan silk.

Brands such as Allbirds use products like ethically sourced Merino wool (sourced from New Zealand, where there are sheep aplenty) in their Wool Runners which have been dubbed the most comfortable shoes in the world.

Even better, their Tree Runners are made from aforementioned Tencel, which comes from sustainably sourced trees, uses 95% less water in the production process than cotton and has half the carbon footprint.

The rest of the stuff that goes into their trainers is all natural or recycled materials and sustainably produced, from the castor bean oil foam insoles to the laces made from recycled plastic bottles.

And just in case you need any more convincing, eco-champion Leonardo DiCaprio was an early investor in the brand, so…

The ultimate guide to shopping sustainably without sacrificing style