It is thermal-insulation and heat retaining, giving you a comfortable hand feeling. Fill and use with water injection design.It is made from PVC, flannelette. Retains heat for an extra long time. This lovable hot water bottle & cover will keep you warm for a whole night.Hot water bottle can be used alone as a remedy for aches, pains and sports injuries.A soft stuffed animal cover. Machine washable.Specifications:- Material: PVC, flannelette- Size: 42*26cm- Package content:- 1 x Hot Water BottleNotes:1. Manual measuring, please allow 1 ~ 3mm error,thank you.2. Due to the difference between different monitors, the picture may not reflect the actual color of the item. We guarantee the style is the same as shown in the picture.