This natural and eco friendly pipe insulation sleeve will cover between 15mm and 22mm pipe sizes. Topsleeve pipe lagging effortlessly insulates pipes by creating a thermal barrier. In addition to the pipe insulation benefits this product also offers acoustic insulation, stopping noisy pipes between cavities which expand & contract with temperature changes. A traditional and effective method of pipe insulation, provides a cost effective insulation for new pipework during installation.Specification:- Suitable for any pipe size between 15mm and 22mm diameter;- 7.2 metre roll;- Eco friendly natural sheep wool (80% wool, 20% mixed fibres); - Ideal for tight spaces, corners and joints;- Fire retardant;- Thermal conductivity: 0.033 W/mK at 10 deg C, 0.039 W/mK at 60 deg C.