PremoBond Bobbins Bonded Polyester Anti-Wick Thread BPT Size 138M (Tex 135M) Sand 72-pack offers marine-grade durability and strength with its bonded polyester construction and anti-wick feature, making it ideal for outdoor applications like patio decor and marine gear. Each pre-wound bobbin contains approximately 26 yards of twisted, plied continuous-filament fiber designed for weather resistance, including UV and mildew protection. With an average breaking strength of 20 lbs, this sand-colored thread ensures reliable, heavy-duty performance while maintaining clean, water-resistant seams in any outdoor setting.