Features: These pipe covers for outside are made of expanded polyethylene foam, waterproof and shockproof, with sound insulation, heat preservation and good plasticity, can lock the heat, reduce the heat radiation loss of hot water pipeline, and avoid the cold water pipeline from being damp. The length of each insulating foam pipe cover is about 3.28 ft/ 1 meter, and you can cut it into the appropriate size according to the actual needs, to protect your pipeline and prolong its service life. Specifications: Material: expanded polyethylene foam Color: black Size: Length: 3.28 ft/ 1 meter Fit pipe: 1/2 inches Outer diameter: 1.5 inches/ 38 mm Inner diameter: 0.59 inches/ 15 mm Thickness: 0.45 inches/ 11.5 mm Package includes: 24 x Foam pipe insulation Notes: Manual measurement, please allow slight errors on size. The color may exist a slight difference due to different screen displays. Industrial product, please stay away from little kids.