Wonder Wool Anti-Microbial Down Alternative ComforterFor years, wool was thought to be uncomfortable compared to modern synthetic and down fibers. Times have changed and wool is making a change too. Introducing WonderWool, a modern blend of wool and select synthetic fibers to improve comfort, loft and durability. The Sleep Philosophy WonderWool blanket features a silky soft 300 thread count sateen fully quilted cover on top of a polyester and wool blended fiber. Items in the set may come in a rolled or