This is a pet hot water bottle that can be heated in the microwave. Please refer to the photos for the recommended wattage and time. I bought it last year for my cat and used it twice, but she didn't use it ( ; ; ) So I've been storing it in the closet at home. I hope someone will find it useful! *As shown in the photos, please note that it is being used without a case. Thank you for your understanding m(__)m #FarInfraredRay#Doogyman#PetHotWaterBottle#HotWaterBottle #PetSupplies#Cat#Dog