This is the Riffe Spectra Fusion Spearfishing Float Line w inner float core Features: Yellow/blue outer sheath is composed of 32 strands fused together, coated with molten polyethylene for an abrasion and color-fast/UV resistant protective sheath. Added internal middle braid ensures constant high test strength. Upgraded foam rubber float core increases buoyancy making retrieval and line location as effortless as possible. Unlike other floatlines on the market made of polypropylene that end up sinking, Riffes Spectra Fusion Float Line stays on the water for optimum visibility. Unrivaled float line built to perform. Tensile strength as tested including hardware (shackle, Quick Clips, and crimps) 800lbs. (365kg) plus. RIFFEs NEW Spectra Fusion Float Line is manufactured from a proprietary custom blend of material, developed exclusively for Riffe with improved strength and durability. Made in the USA.