On the reverse you can have a message of up to 4 lines of 20 characters per line. All personalisation on the reverse will appear as entered and is case sensitive. Please refrain from using special characters as this may impair the quality of the personalisation and in some cases cause it to be missed off the product. NOTE: Due to the font type used please refrain from using all capitals in your personalised message. If the message is all in capitals you will find the personalisation extremely difficult to understand and may even result in personalisation being missed off the product. Many thanks for your cooperation. Not Dishwasher or Microwave Safe. The material of this product is Bone China. This mug is presented in a silver folding gift box. Ideal for Weddings, Special Occasions, For Him.