Pima cotton is a rare type of cotton fiber grown in Peru, Australia, and the US. A relative of the Egyptian cotton plant, Pima cotton boasts of extra-long fibers - up to 50% longer than average - coming from the fluffiest part of the plant. Pima cotton bed sheets are known to be durable yet resistant to wrinkles.
With a lower quality than both Pima and Egyptian, this short-staple cotton is the most common variety you’ll find. Labels that read “100% cotton” are typically Upland, and while still fairly durable, aren’t nearly as soft as other types.