Features: 【Comfortable Breathable Design】Features innovative shoulder support structure, providing ample move for the neck and shoulders. 【Gradual Usage Recommendations】For first-time users, we advise wearing it for 15-20 minutes daily, gradually increasing to 10-20 minutes per day. This step-by-step approach helps users adapt more effectively and improve back move. 【Premium Balance】Crafted from neoprene rubber, it combines comfort with durability. 【Versatile Usage】Whether relaxing at home, engaging in physical exercise, or focusing on work in offices, this back corrector effectively supports back health. 【Wear Recommendations】For optimal comfort, wear the back corrector over a vest, shirt, or top. Specifications: Component: neoprene Size: M-4XL Optional Attributes: black, red, blue, gray Package Includes: 1PC Back Correction Strap note: There might be a bit color distortions due to different computer resolution There might be size errors due to different computer resolution