All purpose 50 weight durable spun polyester thread. This thread has excellent seam strength with consistent sewability and color fast. It is mildew and UV light tolerant as well as shrink and abrasion resistant. This thread is ideal for light to medium weight structured fabrics and garment construction with hems on apparel and curtains, finishing edges on bedding, blankets, table linens, and longarm quilting. All spools are 3000yds long.