These DecoBob pre - wound bobbins are perfect for sewing enthusiasts and embroidery lovers. Use them in various sewing projects like making clothes, home decor items, or doing detailed embroidery work. The pack comes with 36 bobbins of size L (100m / 110yds), filled with 2 - ply cottonized polyester thread in white. They are designed to make your stitching process easier and more consistent, giving you beautiful results every time.