Treat yourself and your family friends with Naanle Hot Water Bottle with Yoga Frog Cover Product Introduction Two capacity sizes 1L & 2L can be selected. The inner transparent bag is made of PVC plastic, exterior printed cover is made of soft and comfortable velvet. About Water Filling Please fold the transparent bag then put it into the cover, fill the bag with 2/3 capacity water, tighten the cap and wipe the mouth. Please hold the bag firmly and keep away from children when filling water. Application Occasion Cool spring and autumn, cold winter evening. Bedroom bed, living room sofa, working chair, etc. Using Effects Warm your hand feet waist stomach for hours. Relieve work fatigue and stress. Relieve menstrual cramps pain. Customizable Cover You can custom the cover with your own photos/pictures/name/text/logo, so it will also be a amazing gift for your lover/family/friends on Birthday/Christmas Holiday. Our store have more custom product, you can try to check more in our store.