Wool Ease Range has an extensive varieties of Weight Categories. Each Weight is an Acrylic/Wool Blend with exception in some of the Worsted colour range.
Wool - Ease comes in Worsted, Chunky, Super Bulky.
Worsted have quite a few varieties of blends. The Thick 'n Quick is now available in a 'Bonus Bundle' which is double the amount of the usual ball.