Top - Fiber is combed to provide spinning fiber in which all the fibers are parallel. This preparation of fiber is best suited to worsted or semi worsted spinning.
Roving - Fiber is carded, usually commercially, into a long continuous cord that is @ 2"-3" thick. The fibers are going in multiple directions (but generally more aligned than a rolag or batt). This preparation of fiber is best suited to woolen spinning.
Sliver - a thinner version of roving.
Rolag - Fiber is hand carded and puled from the cards. Forms a fluffy roll of fiber.
Batt - Fiber is drum carded and pulled from the drum carder. Forms a blanket of fiber.
If you don't find exactly what you want, or would like a product recommendation, please call the shop directly at 800-441-9665 or contact us for assistance.