The 36 FT 3-5/8 ID x 1/2 Wall Semi-Slit Black Poly Pipe Insulation Tube is designed for effective thermal insulation in plumbing applications. Made from high-quality polyethylene, this insulation tube provides excellent durability and resistance to environmental factors. Its semi-slit design allows for easy installation over existing pipes, ensuring a snug fit. With a 3-5/8 inch inner diameter and 1/2 inch wall thickness, it is ideal for various plumbing and HVAC applications, enhancing energy efficiency and protecting pipes from temperature fluctuations.