Hello and welcome to our Warm Charm page. We are pleased to introduce the Mini Warm Charm! The convenient and safe alternative to a traditional hot water bottle - now even smaller.+ Light, compact and portable+ Easy charging in just 10 mins+ Heat retention for up to 2-3 hours+ Safer than a hot water bottle - no need to boil the kettle and risk scalding yourself+ Longer lasting and more hygienic than microwavable bean bags or gel packsMaterial: PVCSize: 39x18cmIt is important to make sure that the charger is inserted fully and that the heat pack is placed on a flat surface while charging.This heat pack gets properly hot. Be careful while handling the heat pack after it's charged. The user can turn charging off before it completes if they don't want it super hot, or use a towel to handle the heat pack to slot it into the cover.Notice:Please allow 1-2cm difference due to manual measurement.The color maybe a little difference compare the image with actual item due to monitor reflect,pls understanding.