Wool is all natural and safe to breathe. Sound absorbent – Wool does a great job of deadening the sound of road noise in your van. The difference is really night and day. It also won't squeak like rigid foam insulation. Is Sheep's Wool A Good Insulator? Besides coming from a regenerative source, sheep wool is also an excellent insulator. The millions of tiny air pockets can trap air, thus creating a thermal barrier from outside temperatures. All this makes your van, skoolie, RV a more pleasant place to be. Insulate your van, bus, or camper van with our wool. This Wool is also excellent for stuffing pillows, bags, mattresses as well as for toy stuffed animals. It is great for spinning as well and has long fibers that are very soft. The wool has the natural scent of lanolin which is used in many skin care products. This natural fiber is a ideal choice for those wishing to avoid using synthetics materials in their crafts and products. Naturally hypoallergenic, no dyes, bleaches or coloring added, just exactly as mother nature made them. WASHED - VERY SOFT - LONG FIBERS unusual breeds of sheep. Wool comes straight from the homestead, we gently hand wash them and allow to dry naturally. Raw wool from KARABAKH, AZERBAIJAN REGION. Karadolakh breed producing a nice medium stape length of sandy white soft wool, good for spinning and felting. A perfect range of texture in this fleece. 1 batt: 21" x 9" x 2" 1lb contains 16 batt (3024 sq inch) 5lb you will get more than 100 sq ft insulation area. Total 16x5=90 batts. This listing for 5lb natural carded wool