Two Types(Optional): Standar/ with Magnetic Roller, relieve chronic back pain and ease away stress. Traction the cervical spine, when placed on the floor and the big head on the neck, traction the cervical spine; traction the lumbar spine. Traction the lumbar spine when placed on the floor with the big head at the waist; correct sitting posture when placed on the office chair with the big head at the waist The spine soothing frame can weigh 500 kg without breaking and resisting bending pressure. Smooth and beautiful, full of exquisite workmanship, reinforced design, strong and durable, strong bearing capacity. The cortex lines of the beam show high-end atmosphere. Perfect matching bow-shaped back massager combined with our free wearable posture corrector. It can be used perfectly in stadiums, offices, homes or wherever you want to go. The back massager is designed to let you stretch your back easily, comfortably and happily. Environmental protection, toughness, toughness, pressure resistance, compact and portable design can fit in the suitcase well. There is a soft rubber pad in the middle to cushion the impact and provide better protection for the waist. Specification: Size: approx. 55x26.5x9cm Package Includes: 1x Back Stretcher