It s designed with full body airbag massage and waist heating function to soothe muscle. 50.5 inches long Sl track will focus on your neck, shoulder, back, waist, hip and thigh for deep massage. Auto shoulder detection achieves precise massage. 3-level zero gravity modes enable you to fully relax your body. Besides, it has 12 auto modes (comfort, relaxing, rocking, ache relieve, blood circulation, good-night sleep, leisure health, shoulder and neck, back and waist, buttocks shaping, full body and spinal massage) and 5 available massage techniques.Among them, the leisure health mode is specially designed for sedentary people in offices. And it also has foot rollers with 3 intensities. 【Please Note】: Inside delivery is Not provided. If a loading dock is not available at your delivery site, you can request inside delivery for an additional fee. Once you request Inside delivery, please make sure the door is large enough to allow the package to pass through. The Packing