The TR1200i is the perfect foldable treadmill and best fit for any home letting you walk, jog, or run in confidence. The 20" by 56" running surface is supported by 6 compression shock absorbers to provide cushioning that is safe for your knees, back and joints. To help track your treadmill workout, the TR1200i automatically records your exercise data to a USB storage device. After your workout, simply upload your data to the LifeSpan Club — one free membership is included with your purchase.