These DecoBob pre - wound bobbins are perfect for anyone into sewing, embroidery, or crafting. Use them for all sorts of projects like making clothes, home decor items, or personalized gifts. They come in a size M pack with 24 bobbins. The thread is a 2 - ply cottonized polyester in a lovely dove grey color. It's great for getting smooth curves and less bulky stitching.