The electric foot warmer adopts the latest heating and vibration technology. Effectively relieves tension, stiffness, soreness and cramps. Protect your feet from poor circulation, arthritis and cold floors. ULTRA-SOFA FLANNEL: Both sides of the foot warmer are made of ultra-soft flannel, which is very durable and warm. The soft, thick flannel cover traps heat inside the pad to keep you warm. Multiple uses: 3 settings: heat, vibrate, heat and synchronized vibration. Non-slip bottom material, USB power supply, no matter at home, office or car, it can be used as a hand warmer or travel pillow. 45 minutes automatic shutdown to prevent overheating. EASY TO USE - The foot warmer massager is lightweight and portable, allowing you to relax on your sofa, bed or chair in the office or at home. Perfect holiday, birthday, Christmas gift for mom, dad, friend or anyone you love. Feet are the second heart of the human body. Foot is the root of the human body and the foundation of health. Each electric foot warmer has undergone strict safety testing and strict process control. Please use it with confidence. 45 minutes automatic shutdown to prevent overheating. Color: Gray | Size: 14.2 x 12.2 inches Mode: One-button operation, simple and easy to use. 3 function settings. Long press the switch to turn it on or off. Change the function every time. Red - heat only. Blue - Vibration only. Green - heating and vibrating. Power supply: USB power supply, recommended 5V, 2A power supply. (NOT INCLUDED) Item is not rechargeable and requires a USB connection adapter.