The 30 FT Semi-Slit Black Poly Pipe Insulation Tube by Jones Stephens features a 3-5/8 inch inner diameter and a 3/4 inch wall thickness, providing excellent thermal insulation for pipes. This product is designed to protect pipes from temperature fluctuations and condensation, making it ideal for both residential and commercial applications. The semi-slit design allows for easy installation over existing pipes, ensuring a snug fit. Made from durable materials, this insulation tube meets industry standards for performance and longevity, making it a smart choice for energy efficiency.