[4-step adjustment] This back massager has 4-step adjustment, and the arc design can reach a larger area. Equipped with 88 massage protrusions that correspond to your body points, massage your lumbar spine while stretching. [Correct Sitting Posture] When you are sitting, you can use it to correct sitting posture and massage the lumbar spine. It helps relieve chronic back pain, correct postural imbalances and restore the natural curvature of the back. It can also improve the flexibility of the shoulder and back muscles. [Eco-friendly and lightweight material] This back massager is made of high quality PP polyurethane material, which is environmentally friendly, durable, shatterproof, compression resistant, compact and portable, and can be put in a suitcase. The soft rubber cushion in the middle can cushion the impact and better protect your waist. Increase the freedom and flexibility of activities. [Easy to use] This back massager is designed to be user-friendly and easy to use, adjustable and portable, and can be used anytime, anywhere. Or. The device is small in size, lightweight and equipped with multi-level back extensions. This device can help you relax and immediately relieve back pain caused by muscle tension, excessive bending and misalignment of the spine. [Multi-purpose] This is for doctors professionals, chiropractors and athletes who recommend and use back massagers. The back massager is designed to stretch your back quickly, safely, comfortably and comfortably. In addition, the spine health preventive device is convenient to treat spine problems at home, an intimate gift for family and friends. Product Description Detailed description: Material: PP polyurethane Product size: 37.5*25cm 4 height adjustable levels: 6/11/12cm Color: blue and black, red and black, purple and white. Model: acupuncture model Features: Lying massage dual-use, multi- points, arch correction Applicable scenarios: FFITness equipment, health massage, fitness, body correction, sports Package contents: 1 x back massager. Please note: 1. The difference between different monitors, the picture may not reflect the actual color of the item. 2. As manual measurement is different, please allow slight differences in size. Thank you for your understanding.