100 wt. monofilament polyester thread. Designed for invisible applique and quilting. This reduced-sheen monofilament polyester is the best choice when it comes to invisible threads. Unlike other monofilament threads made from nylon, MonoPoly is 100% polyester. Commonly referred to as an invisible thread due to its fineness and reduced-sheen, MonoPoly is great for the bobbin or top. Available in two colors, Smoke (for dark fabrics) and Clear (for light fabrics).

• Use MonoPoly for invisible appliqué, quilting, bobbins, and apparel.
• Reduced-sheen invisible thread.
• .004" (.1mm) in diameter (90 denier) = Very fine thread.
• Iron and dryer safe (medium heat).
• Will not become brittle over time (nylon monofilament thread tends to go brittle).
• Will not discolor (nylon monofilament thread tends to "yellow" over time).
• Strong with low stretch
• Soft & pliable