100% Natural Chunky Core Wool, Carded Roving, Un-Dyed, 4 OZ Maori, Made in Italy, Best Core Wool for Needle Felting, Stuffing, 27 Micron : Amazon.co.uk: Home & Kitchen
Core Wool for 3D Needlefelting - available in a choice of weights - natural - Gill-I-Am
PenFelt Studio
Guide to Different Wools for Felting – Hawthorn Handmade
Core Wool or Wool Batt what is best to use? - Black Dog and Ginger Cat