InvisaFilâą is Wonderfil's finest thread line â a luxurious 100wt, 2-ply cottonized polyester designed to virtually disappear into your stitching. With a silk-like feel and matte finish, this ultra-fine yet surprisingly strong thread delivers beautifully low-bulk results for both hand and machine work. Ideal for English paper piecing, appliquĂ©, micro quilting, delicate lace, fine fabrics, and invisible stitching, InvisaFilâą blends seamlessly into your projects while still offering the strength and control you need. Available in 60 subtle-to-bright solid colours, you can choose exactly how much (or how little!) you want your thread to show. Whether youâre working on heirloom details or intricate quilting textures, InvisaFilâą gives you precision without the bulk.