Circular in fashion refers to the practice of turning old/used/leftover clothing into new clothing. This can be done through:

• Designing at the beginning of life to be recycled by making the product out of 100% one material with easily deattachable parts (zippers, buttons)
• Recycling product at the highest value by choosing to resell or recycle before disposing of leftover product
• Upcycling product by adding value to leftover materials by making new garments

Carbon negative removes more carbon dioxide from the atmosphere than it produces. For example, wool that is produced on a regenerative farm may capture more carbon dioxide through the grasslands planted to raise the sheep than the production process requires to produce a wool sweater.

The product has a net effect on carbon dioxide of zero. This can be done by buying carbon offsets or investing in carbon removal technologies.

Deadstock fabric is the remainder of a roll of fabric. For example, if a company uses 10.5 rolls, there may be 0.5 rolls of material leftover. Companies who use deadstock fabric will have to make small batch, limited quantities from each fabric.

The product has a net effect on carbon dioxide of zero. This can be done by buying carbon offsets or investing in carbon removal technologies.

This is a synonym to carbon neutral.

Organic fabrics such as organic cotton or organic linen are plant-based fibers that are made from natural farming techniques. They do not use fertilizers, pesticides, or genetically-modified (GMO) seeds.

Recycled fabrics such as recycled polyester (rPET) go through an industrial process to degrade existing plastic into new fibers.

Also known as "textile-to-textile recycling"

Upcycled clothing are unique one-of-a-kind garments that are usually handcrafted from vintage garments. An example is making a new blazer from an old blazer.

Vegan clothing is not made from animals or animal by-products such as silk, fur, feathers, or wool