Superior knot retention makes this rope useful for a variety of applications. Glows in the dark: after charging in the sunlight for 3-4 hours, will glow for 5 hours at night. Perfect for nighttime boating: floats, glows in the dark, and resists mold and mildew. Sturdy 100% polypropylene construction and diamond braided for extra strength. Great for overnight camping: never trip over tent lines anymore Safe working load: 116lbs, break strength: 350lbs.