[Smart Air Lift for Lumbar Support] Built-in air cushion inflates and deflates at the touch of a button to gently lift and support the lower back, helping to reduce pressure from long periods of sitting or resting. Adjustable height fits various body types and usage scenarios. [3-in-1 Lumbar Support with Massage and Heat] Combines vibration massage, constant temperature heating, and intelligent air lift in one unit. Automatic mode switches between functions, while manual mode allows you to select an individual function for personalized comfort during daily use. [Breathable and Skin-Friendly Fabric] Moisture-wicking, airy mesh fabric keeps you dry and comfortable without feeling stuffy. Suitable for office chairs, sofas, beds, or travel, maintaining consistent comfort throughout the day. 【Ergonomic Curve and Memory Foam Core】 Designed with an ergonomic lumbar curve and premium slow-rebound memory foam that evenly distributes pressure. Soft, breathable materials naturally conform to your back for stable, comfortable support. [Easy Plug-In Use and Daily Use] Simple button controls with clear indicator lights make operation intuitive. Plug-in design ensures stable performance for home or office use; please note that the product does not include a built-in battery. [Note]: Please use a power adapter with an output of 5V/2A or higher to ensure proper performance. For detailed instructions, please refer to the user manual or contact customer service if you need assistance.