Features:1.Support and warmth to relieve pain. Say goodbye to aching back pain and slouching shoulders.2.The Unisex Adjustable Magnetic Posture Correction Neoprene back support is the most recommended brace in the market by Doctors and Physiotherapists.3.Designed by back experts、 this brace aims to provide both stability and flexibility to the users by improving posture. The lightweight design gives the user complete freedom of movement.Description:Item Type: Corrector BeltMaterial: Neoprene、Elastic、Magnet、Magic stickColor: BlackSize: M\/L\/XL(choose the one you like)Package Included:1 X Corrector BeltNotes:1. The real color of the item may be slightly different from the pictures shown on      website caused by many factors such as brightness of your monitor and light brightness.2. Please allow slight deviation for the measurement data.               Size               Your Waist               Corrector Belt Waist               Corrector Belt Height                   M               70~85cm               90cm               42cm                   L               85~100cm               100cm               42cm                   XL               100~115cm               110cm               42cm