Large - Heat Pack Size: 13.5 x 45 cm (5.5 x 17.75 inches), Weight approx. 700g The large heatpack has an innovative addition to the design with a 2 channel distribution, allowing for a greater flow of wheat and therefore a more equal distribution of heat preventing the wheat from falling to one side as in other designs Hand made in the UK (Manchester) Made using UK cleaned wheat Made with French (grown in Provence) Lavender (optional) CE certified as a Medical Device CA013851 Meets the stringent BS8433:2004 Microwaveable Personal Warmers