Medium 3Level Adjustable Back Stretcher Designed to support natural spinal alignment, this ergonomically curved spine board provides targeted stretching and gentle massage for both upper and lower back. The three adjustable height settings let users increase stretch intensity progressively, making it suitable for beginners and more experienced users. Key benefits Adjustable intensity: three height levels allow gradual increase in stretch to match comfort and flexibility goals. Ergonomic support: curved design follows the natural spine shape to encourage improved posture while stretching. Targeted relief features: useful for people addressing herniated disc issues, sciatica, scoliosis, nerve irritation, posture correction, pressing discomfort, and general back tension. Versatile placement: intended for use while lying on the floor or positioned against a chair to reach different areas of the back. Compact and portable: medium size and lightweight construction make it easy to carry between home, office, and travel. Simple daily routine: short sessions of five to ten minutes can be incorporated into a daily schedule. What makes it stand out Threelevel adjustability for controlled progression. Dualarea design suitable for both upper and lower back focus. Compact medium size intended for youth users who need posture support and targeted stretching. Practical use scenarios Office breaks: use for a few minutes during work breaks to help restore spinal alignment after long periods of sitting. Postactivity stretching: use after exercise or physical activity to support muscle recovery and maintain flexibility. Study and practice sessions: use while doing homework or sitting through classes to provide posture support and gentle back stretching. Specifications and usage tips Size: Medium Intended use: Back Age range: Youth Adjustment: 3 height levels Typical session: 5 to 10 minutes daily Placement: Use lying flat on the floor or lean against a chair to target different spinal areas Easy to adjust and carry, this back stretcher offers a simple, noninvasive way to add targeted spinal stretching and gentle massage to daily routines.