Thermwell Products P11X Foam Insulation, 3-Feet Reviewhttp://tinyurl.com/nrgla7e Thermwell Products P11X Foam Insulation, 3-Feet 3-Feet Black Tubular Polyethylene Foam Pipe InsulationHelps To Prevent Pipes From Freezing Or SweatingComes Pre-slit, With Heavy-duty 3/8-Inch Wall ThicknessFor Use On 3/4-Inch Copper Pipe, Or 1/2-Inch Iron PipeComes With 4 To A Pack