Instruct: Classify Amazon reviews into positive or negative sentiment
Query: don't waste your money

if you're considering these, my recommendation is to invest your money elsewhere.my belt size is ~31 (32 is too big & 30 is a little small) & i'm a fairly active person with a lot of walking & healthy eater. i bought it after extensive review/research and knowing its limitation. but since i drive a lot, i go "what the heck"..... yet after 30 days of INTENSE use (max setting at 99, 2-3 hours / day. 4-6 days / week), i have noted minimal improvement in my abdomen musculature. so i don't know if these are as good as the claim. my take is to limit your calorie intake & increase daily physical activity (30+ min /day, until sweating) is much more cost effective than these, especially considering the cost of the replacement pads. when you exercise, you use whole lot more muscle mass, instead of only the ones stimulated by this belt.