Quick and long-lasting warmth ：The electric vest only takes one minute to feel the heat emitted, it heats up quickly and has a good warmth retention effect. But we do not carry mobile power, you need to buy the mobile power by yourself. It will be more cost-effective to buy the mobile power by yourself than our matching, and you can choose a larger milliliter battery. Unparalleled customer service： Unisex heating vest. Refer to the Ejoy vest size information and choose the appropriate size. In addition, we provide a free size change service for up to 30 days. If the size is not suitable for you, please repack it in our customized packaging bag and send it back to us. An electric heating vest of the right size is being sent to you. Provide you with worry-free customer service at any time.