Elastane, also known as Spandex or Lycra, is an artificial fibre made from crude oil, which is a non-renewable resource. It is a type of plastic and is usually used to blend with other fibres to give fabric elasticity. It can commonly found in stretchy clothes.
Synthetic petroleum-based fibres are non-biodegradable and can take up to 200 years to decompose. They usually require a lot of energy along with toxic chemicals during the manufacturing process, which are later washed into our water. Most of these chemicals are impossible to decompose and cause permanent water pollution. Besides, when washed in a washing machine, these fibres release micro-plastics in our oceans, which are later consumed by fish and other marine life and consequently enter human food chains.