The De Vielle Luxury Long Hot Water Bottle is simple and convenient: just plug it in and allow approximately 15 minutes for it to reach full temperature. This rechargeable bottle provides hours of sustained warmth, ensuring you stay warm and toasty while sleeping or relaxing. Designed with comfort and safety in mind, it features a built-in double thermostat to prevent overheating, which cuts off power once the target temperature is reached, making it a safe and reliable choice. The bottle is permanently sealed to ensure no risk of scalding. Covered in super soft fleece for maximum coziness, the De Vielle rechargeable hot water bottle is a great addition for the colder months. A handy pouch is included for additional convenience.