Cruising sailors who desire optimal performance will appreciate this low stretch construction, smooth rendering, and long life of the 3-end per carrier cover over a polyester core. Fiber: polyester core, polyester cover 3-ends per carrier. Standard Colors: black, red, green, and blue .CONSTRUCTION: Double braid. COVER: Polyester with 3-ends per carrier CORE: Polyester. Applications: Recreational Running Rigging.