Understanding Roving Yarn by Mama Knows Luxury - YouTube
Glaciart One Spinning Fiber Merino Wool - Super Soft 8 Green Colors (10gram/0.35oz per Color) Unspun Roving Wool for Felting and Felting Yarn Craft Supplies : Amazon.co.uk: Home & Kitchen
Roving - Wikipedia
Don't Knit That Chunky Roving Blanket on Pinterest - The Woolery