1. Weight: 0.2 kg 2. Material: rubber 3. Dimensions: one size 4. Features: Improve bad sitting posture, improve eye distance 5. Applicable scenarios: fitness equipment, running sports, fitness and body, health massage 6. Tips: Wear 15-25 minutes every day for the first few days, then increase 20 minutes every day afterwards, your back and shoulders will slowly adjust, which will build the correct posture of muscle memory
