I am completely satisfied with this lap belt! This is of course not a "miracle" solution, but the strengthening of the abdominal muscles is very clear past few weeks. The fact of not having to use gel on the electrodes is a real plus. We regret only not be able to recharge the batteries easily and not to have more explanations about the intensity to be used during initial use. This is one of the best quality / price ratio on the market today! To use without moderation =)