When I am asked if I use craft felt in any of my classes, I like to let my students know what the differences are between craft felt and wool felt. For starters, craft felt is created with manmade fibers, mostly plastic and synthetic fibers, which have been needled and/or heat processed to cause the fibers to adhere to
Differences between felts ~American Felt & Craft ~ Blog
Felt Comparison: Acrylic vs. Wool — Craft Critique