Cred ca putem spune doar 'bumbac tors' pentru ca torsul urmeaza operatiei de pieptanare, deci prima este, oarecum, implicita.

'Ring-spun vs. Regular Cotton: Now the interesting thing about this is that if you took a certain amount of cotton fiber and created the basic cotton material, that we talked about at the beginning of this, and then took that same amount of cotton fiber and created it under the Ring-spun process, because of the twisting and thinning the Ring-spun cotton would be a lighter weight than the regular cotton. Therefore, even though a 6.1-oz 100% (basic) cotton t-shirt may be heavier than a 4.3-oz 100% Ring-spun cotton t-shirt, the lighter weight Ring-spun t-shirt may very well be more durable (and definitely a lot softer) than the basic cotton t-shirt.'
http://breakoutcreativecompany.com/2011/08/what-is-ring-spun...
http://www.racingbikeshop.ro/shop/echipamente/tricouri-camas...