Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Very Good Product

This product is very solid! I'm in the military and can knock out 60 or 70 pushups in 2 minutes (depending on how hard I've been training recently). These grips make pushups tough and challenging, and I can barely do 35 straight on them! I've been training on them for 3 weeks, and while I haven't yet measured the difference in terms of my performance on "regular" pushups, I'm sure it's appreciable. I highly recommend this product to anyone looking to improve muscular endurance in their upper body.