Phentex Yarns are 100% acrylic, sturdy and durable.  Pattern support available, including slipper patterns.  Worsted, Sport and Chunky are sold in large size balls.  Kelsea sells the following Phentex yarns:

• Merit
• Phentex Worsted
• Phentex Slipper
• Phentex Sport
• Phentex Chunky