PremoBond Bobbins Bonded Polyester Anti-Wick Thread BPT Size 138G (Tex 135G) Steel Grey 72-pack offers durable, fade-resistant performance for outdoor sewing projects. Featuring bonded polyester construction with advanced UV and mildew resistance, this thread resists wicking to prevent moisture migration, making it ideal for heavy-duty applications like canvas, awnings, tarps, marine use, outdoor upholstery, luggage, footwear, and filtration. The pre-wound bobbins ensure consistent diameter and high seam strength, while the twisted and plied yarn enhances abrasion resistance and long-lasting seams in a steel grey color that complements various outdoor fabrics. This pack contains 72 bobbins designed to deliver reliable strength and durability in demanding outdoor environments.