Weighted blankets are made from a variety of materials, including cotton, polyester, silk, or cashmere.
You can even get fleece weighted blankets.
These are filled with micro-beads, glass beads, or poly pellets to add weight.
The fabric is then quilted or stitched together to create a blanket that is evenly weighted.
Some weighted blankets, though, such as cotton cooling weighted blankets or knitted weighted blankets, rely on the weight of the actual material and don’t have any filling.