Material:Plastic Application:Body Size:24.5.30.9.5cm Package:1 * Back massager Back Massager Stretcher Magic Stretch Lumbar Support Relaxation Spine Pain Relief Massage Tools Yoga Device Lumbar Correction feature: Please note: other accessories are not included. 100% brand new quality Size: 24.5.30.9.5cm colour Cherry blossom powder, sky blue, starry sky gray Product function: relieve lumbar and spinal traction Curved stretch gravity traction The lumbar spine returns to the 26 physiological curve Use body gravity to pull and stretch Open the space between the spine to relieve lumbar pain 10 minutes a day to bring the lumbar spine back to the 26 physiological curve Recessed U-shaped guide groove Traction the lumbar spine correctly The middle part is designed to be lower than the sides And there is a certain arc, in line with ergonomics Effectively fix the spine Shelf life: 3 years Comment: 1. Manual measurement tolerance is 2-5g. Please don't mind your substitutes. 2. Due to different monitors, the picture may not match the actual color of the product. thank you very much! 3. SKU color is product color Package Included: 1 * Back massager