Keep heat and cold, bodily conduction, uniform warmth dissipation, long-lasting heat preservation, warm all night Fresh and cute sketch patterns, small and exquisite, clear to hold PVC material, explosion-proof and compressive, flexible and comfortable, good hand feeling Screw cap, sealing ring, groove kind leak-proof design, high temperature resistance, no deformation Physical warm temperature conduction, wonderful sizzling water bottle for neck and shoulders, soothe and relieve pain, heat hands, toes and waist smoothly Specification: Material: PVC, Flannel Size: 17*11cm Weight: 142g Package Included: 5PCS * Hot Water Bottles (Random Style)