1No need for power supply, two functions of hot compress and cold compress, meet your different needs. 2Made of high quality material, soft and non-deformed, skin-friendly and comfortable to touch, durable for use. 3Highstrength compression resistance, waterproof / antispill / leakproof, ecofriendly fabric, convenient for use. 4It can help reduce swelling, protect and care for your lips. Glitter sequin decoration, beautiful and practical. 5Unique craftsmanship, bright color, can be used in winter and summer, light weight and in small size, easy to carry.