Bamboo vs. Recycled Polyester – The Sustainability Duel
Short answer: Bamboo and recycled polyester are two different answers to the same problem. Recycled polyester saves new oil, but sheds microplastics in the wash and smells like any synthetic. Bamboo is a fast growing raw material with no microplastics, but it is processed chemically. Neither is perfect, and we say it as it is.
Where recycled polyester comes from
Recycled polyester is usually made from plastic bottles that are melted down into new fibres. That saves crude oil compared with new polyester and gives the plastic another life. The fibres are still plastic, though, with the same properties as ordinary polyester, both when worn and when washed.
Microplastics in the wash
When synthetic clothing is washed, tiny fibres come loose in the water. That applies to recycled polyester too. Some of them end up in nature, and when the garment is eventually thrown away, it is still plastic waste. This is the biggest weakness of recycled polyester, and recycling does not remove it.
Where bamboo comes from
Bamboo grows quickly and can be cultivated without irrigation or fertiliser. To become soft fabric, however, the plant's cellulose has to go through a chemical process in which it is dissolved and spun into viscose. The raw material is plant based, while the processing is industrial. Both belong in the picture. The full picture is in the guide to bamboo and the environment.
Wood and forests with documentation
When raw material comes from forests and plantations, how it is grown and harvested matters. Some products carry the FSC label, which relates to responsible forestry. You can find our products with that label under FSC certified products if you want to choose on that basis.
Comfort decides how long clothes are used
How long clothing is worn matters a lot for its overall footprint. Clothes that feel good get worn again and again. Recycled polyester quickly smells of sweat, while bamboo breathes and helps limit odour. That is why bamboo clothing often stays in the wardrobe for a long time. See the comparison in the article on bamboo for training.
Training in bamboo
For light and moderate exercise such as yoga, walking and strength training, bamboo works well because it moves moisture away and feels soft. For very hard sessions, polyester does dry faster. Take a look at our bamboo activewear for women if you want to try bamboo for exercise.
Where recycled polyester works best
In some garments the properties of plastic are necessary. Shell jackets, rain jackets and windproof layers need to keep water and wind out, and bamboo cannot do that. Here recycled polyester makes sense, because it replaces new polyester in clothing that has to be synthetic anyway.
Where bamboo works best
Close to the skin, bamboo is a strong choice. Underwear, socks, T-shirts and light activewear benefit from a material that breathes, limits odour and feels soft. You avoid microplastics from the items that are washed most often, and those are the ones that fill the washing machine.
Washing and care matter
Whatever the material, you can make a difference in the wash. Wash at a low temperature, fill the machine and skip the tumble dryer when possible. Bamboo can often be aired between wears because it smells less. Synthetic clothing can be washed in a bag that catches some of the fibres.
The pragmatic choice
No single material is best for everything. Choose recycled polyester for the outer layer, where the properties of plastic are needed, and bamboo for the layers next to the skin. Buy what you actually need and use it for a long time. That often matters more than the choice of fibre.
Frequently asked questions
Is bamboo better for the environment than recycled polyester?
It depends on what you compare. Bamboo sheds no microplastics but is processed chemically. Recycled polyester saves new oil but sheds microplastics. Neither is perfect, so choose according to use.
Does recycled polyester shed microplastics?
Yes, recycled polyester is still plastic and sheds tiny fibres in the wash, just like new polyester. A wash bag can catch some of them, but it does not solve the problem completely.
When should I choose bamboo over polyester?
Choose bamboo for clothing close to the skin, such as underwear, socks and light activewear. Choose polyester for rainwear and shell jackets, where the fabric needs to keep out water and wind.
See our range of men's bamboo socks.
