Sustainable clothing refers to fabrics derived from eco-friendly resources, such as sustainably grown fiber crops or recycled materials. It also refers to how these fabrics are made. Historically, being environmentally conscious towards clothing meant (1) buying clothes from thrift stores or any shops that sell second-hand clothing, or (2) donating used clothes to shops previously mentioned, for reuse or resale. In modern times, with a prominent trend towards sustainability and being ‘green’, sustainable clothing has expanded towards (1) reducing the amount of clothing discarded to landfills, and (2) decreasing the environmental impact of agro-chemicals in producing conventional fiber crops (e.g. cotton). Under the accordance of sustainability, recycled clothing upholds the principle of the "Three R’s of the Environment": Reduce, Reuse, and Recycle, as well as the "Three Legs of Sustainability": Economics, Ecology, and Social Equity.
Through the utilization of recycled material for the manufacturing of clothing, this provides an additional realm of economic world profit. Sustainable Clothing will provide a new market for additional job opportunities, continuous net flow of money in the economy, and the reduction of raw materials and virgin resources. Source reduction or reducing the use of raw materials and virgin resources can ultimately reduce carbon emissions during the manufacturing process as well as the resources and carbon emissions that are related to the transportation process. This also prevents the unsustainable usage of extracting materials from the Earth by making use of what has already been used (i.e. recycling).
Cotton, also known as vegetable wool, is a major source of apparel fiber. Celebrated for its excellent absorbency, durability, and intrinsic softness, cotton accounts for over 50% of all clothing produced worldwide. This makes cotton the most widely used clothing fiber. However, growing and processing this particular fiber crop is largely unsustainable. For every pound of cotton harvested, a farmer uses up 1/3 lb of chemical, synthetic fertilizer. As a whole, the US cotton production makes up 25% of all pesticides deployed in the United States. Worldwide, cotton takes up 2.4% of all arable lands yet requires 16% of the world’s pesticides. Furthermore, the cotton hulls contain the most potent insecticide residues. They are often used as cattle feed, which means that consumers are purchasing meat containing a concentration of pesticides. The processing of cotton into usable fibers also adds to the burden on the environment. Manufacturers prefer cotton to be white so that cotton can easily be synthetically dyed to any shade of color. Natural cotton is actual beige brown, and so during processing, manufacturers would add bleach and various other chemicals and heavy metal dyes to make cotton pure white.Formaldehyde resins would be added in as well to form "easy care" cotton fabric.