Pima and Supima cotton: what does the label actually tell a buyer?

Main answer

Pima is a type of extra-long-staple cotton, and SUPIMA is a licensed trademark for American-grown Pima cotton, so a SUPIMA label points to a licensed, traceable supply chain, while a generic pima label alone does not prove origin or content. Ask for licence documents for Supima and fibre content tests for any pima claim.

What pima is

Pima describes extra-long-staple cotton, which has longer fibres than regular upland cotton. Longer fibres can be spun into finer, smoother and stronger yarns, which is why pima cotton is associated with softness and durability. It is grown in several countries, and quality varies by grower and grade.

What Supima adds

SUPIMA is a trademark of Supima, which licenses it for products made from 100% American-grown Pima cotton. A product bearing the mark should come through Supima’s licensed supply chain, which supports the origin claim. Supima says that products do not need to say 100% Supima cotton, but must follow its identity guidelines.

What a generic claim proves

A product marked just pima may use pima from any origin, and may contain other fibres or lower grades. Check the fibre content on the label and ask for supporting documents. The FTC requires accurate fibre content labelling and says that when you name a premium cotton, the claim must be truthful and the percentage clear.

Price and value

Premium cotton costs more, but yarn count, knit and finishing change the result as much as the cotton. A well-made standard cotton can feel better than a poorly made premium one, so judge the fabric and not the name alone.

What to request

For Supima products, ask for the licence number and the supply chain documents, and check that your own use of the mark is licensed. For pima without the trademark, ask for origin evidence, yarn specs and a test of fibre content. Compare handfeel and pilling on samples. See underwear fabrics and pima cotton boxer briefs.