Instruct: Classify Amazon reviews into positive or negative sentiment
Query: avoid

don't even bother with this product. it WILL NOT stay in place and if it does, it won't for very long.it moves around too much, even during the measley 5 reps I could get out of it before it slipped from its position.the wood part has some paltry sandpaper on it that's SUPPOSED to grip and hold it in place. even if that worked it wouldn't matter, the poor glue (or lack thereof) won't even keep the sandpaper on the wood anyway.and if there's a question of me being extremely hefty or anything, i weigh 185 lbs.save your money, find something else