Achieve professional-grade durability with Gutermann Extra Strong Upholstery Thread. Specifically engineered for heavily stressed seams, this high-performance thread is the ideal choice for working with heavy fabrics such as denim, leather, and canvas. While exceptionally tear-resistant and robust, the thread remains soft and supple, ensuring a smooth and effortless stitching experience on both decorative and structural projects. Its superior strength provides long-lasting results for upholstery, garment repair, and creative crafts that require extra reinforcement. This thread offers a precise color match and reliable tension for all your heavy-duty sewing needs. Product Summary: Gutermann extra strong sewing thread for denim, leather, and canvas, designed for heavy-duty upholstery and reinforced seams.