The grips are awesome! Getting used to the way they feel in your hands may take a couple of days. They are not to thick but you do have to break them in because of the sturdiness and rigidity they have (which is not a bad thing when it comes to helping with grip) in them when you first use. It took me about 5 gym days to finally break them in and be comfortable with them. I haven't used in hand grips before this.
I have used these grips for pushing and pulling exercises and these are NOTHING like I have used before. I honestly barely have to grip the bar/dumbbells/handles when exercising.
I noticed less fatigue in my forearms/wrists after the very first day using them, and more fatigue/pump in the muscles I was working out. I even reached a new PR on deadlifting. I haven't deadlifted over 315 since I was in my late 20's. Well i got 375 for 3 with these bad boys!!
As I said in the title, these grips are definitely as advertised! If you or someone you know is looking to increase strength of muscles you want to improve rather than plateau because of wrist and forearms then these are a definite must have!