Thermwell Products P10 Foam Insulation, 3-Feet, 4-Pack
3-Feet Black, Tubular, Polyethylene Foam Pipe Insulation. Helps to prevent pipes from freezing, or sweating. Comes pre-slit, with heavy-duty 5/8-Inch wall thickness. For use on 1/2-Inch copper pipe, or 1/4-Inch iron pipe. Comes with 4 to a pack.