FireLine® is not biodegradable. FireLine®has always been made with Dyneema® which is considered to be the world's strongest fibre. Dyneema® is a primary component in items such as personal armour (vests, shields, and helmets); cut-resistant gloves; and sails & riggings. Strong pre-waxed braided bead thread suitable for stringing, knotting etc.
8lb (0.17mm diameter) with a tensile strength of 3.6kg