#PLAYLiFE 【No Need to Replace Hot Water, Rapid Heat Storage Charging, Long-lasting Warmth】 This environmentally friendly hot water bottle can maintain warmth for up to 8 hours with a 15-minute charge. 【Convenient Portable Cover with Insulation Pocket, Gentle on the Skin】 Comes with a soft-touch insulated cover. It doesn't dry out the air and can maintain a skin-friendly temperature. 【Large-sized Hot Water Bottle, Cordless, Usable Anywhere】 Large size for long-lasting warmth. Cordless, so it can be used anywhere, convenient for warming cold areas. 【6-Layer Explosion-Proof Design, Safe and Reliable】 Safety is improved with a 6-layer explosion-proof design and water and electricity separation design. It automatically turns off when it exceeds 75°C. It is PSE certified and registered with the Ministry of Economy, Trade and Industry, so you can use it with peace of mind. 【Economical & Energy-Saving】 No need for water and gas bills due to electricity use, and it costs about 2.5 yen per charge. It is also recommended for winter cold対策. Furthermore, using a hot water bottle can indirectly promote a dieting effect. ・Metabolism Up by Promoting Blood Circulation: Using a hot water bottle improves blood circulation, which can temporarily increase metabolism. This also leads to improvements in cold sensitivity and relaxation of muscle and joint tension. The temporary increase in metabolism may also promote fat burning. ・Stress Reduction through Relaxation Effects: The warmth of a hot water bottle has a relaxing effect. Reducing stress can suppress overeating and appetite caused by stress. Reducing stress can also make dieting easier.