Blue Performance Sea Rail Cover [PC866]Sea Rail Cover Blue Performance sea rail covers make hiking out or leaning on the rails more comfortable. Features: The outer cover of the Blue Performance Ripstop with Velcro closure over the full length Mid layer of durable foam The inner core of a clear flexible plastic tube, spiral cut, to protect the foam mid layer Specifications (L x W): Long: (ft.) 4. 9 (M) 1. 5 Easy to use: Thread the wire of the rail through the inner core and foam mid layer