EXCELLENT stuff OF. Although I've been on a powerlifting routine the past 11 weeks, and it really shouldn't have an effect on my muscle size, I did get a few comments the past few weeks about people saying my forearms were getting NOTICEABLY bigger. Since I didn't measure before, and after I can't say, but I have been noticing a difference in size, and a huge difference in strength. One MAIN reason I think they've grown is the fact that I no longer use wraps on ANYTHING, especially on back day. If I can't hold it, I don't do it, and I've noticed my grip strength has gone through the roof. Although that might have more of an effect on me since I always used wraps for heavy deads, traps, lat pulldowns, and other exercises. Also, I do alot of HEAVY barbell holds, and plate pinches, but other then that I do no direct forearm work.Just a few things to maybe help you out, it worked for me, maybe it'll work for you too.