Energy Saving Recommended' by the Energy Saving Trust, Insulate pipes to keep your water hotter for longer, Totally CFC & HCFC free, Ozone depletion potential of zero, Compliant with Part L (April 2006) Building Regulations, Meets the W35 category for water regulations, Suitable for all pipes with an outerside diameter of 15mm, Thickness of insulation: 25mm, Keep your hot water hot for longer & reduce carbon emmissions & control bills