Sulky Invisible Polyester Thread .004 mm 440yds Clear

Achieve flawless, invisible stitching with the Sulky Invisible Polyester Thread .004mm 440yds – Clear.
This ultra-fine, silky-smooth monofilament thread is designed for quilting, appliqué, and invisible seams where you want your stitches to disappear but your craftsmanship to shine.
Unlike traditional nylon monofilament, Sulky’s 100% polyester version is soft, flexible, and safe for delicate projects — even baby quilts and garments.
It’s completely heat-resistant under a cotton iron setting, so you can press and finish your work with confidence.
Perfect for use in the top thread or bobbin, this strong yet gentle thread glides easily through fabric layers without tangling or stiffening your project.
Brand: Sulky of America
Material: 100% Polyester
Length: 440 yards
Diameter: .004mm (ultra-fine)
Colour: Clear
Soft and gentle enough for baby items
Heat-resistant — will not melt under cotton iron settings
Ideal for machine quilting, appliqué, serging, and invisible hems
Creative Uses
Perfect for baby quilts and garments — soft and non-abrasive on delicate fabrics.
Use for appliqué and invisible hems without visible thread lines.
Ideal for quilting over patterned fabrics or colour transitions.
Great for attaching trims or labels where you don’t want stitching to show.
Use in sergers or bobbins for a clean, invisible finish on seams.
✠̈ Soft enough for baby projects and strong enough for professional sewing — Sulky Invisible Polyester Thread is the clear choice for perfect, heat-safe, invisible stitching.