The lines come sealed in packages with a five-year shelf life. Once on the pole, the line lasts 10-12 months without any reduction in strength. The product is available in 4-, 6-, 8-, 10-, and 12-pound tests in 210-yard spools ($16) with larger sizes in the works. It looks, feels, and performs like a standard line. Along with the environmental benefits, Bioline claims excellent knot strength and abrasion resistance. Unlike standard monofilaments, Bioline doesn't absorb water, ensuring that its properties remain the same during a long day of fishing.