Voices From CustomersSuper fun to use and it?s hard to put down once you get started (I train Muay Thai btw)--JamesA LOT easier to watch than to actually do it. Love the challenge and the guys I train and myself will definitely benefit from using this product.-- Joaquin ZamoraGreat addition to my boxing gear! It's a little difficult to get used to at first, but as long as you start with the black ball, and start with small punches, (think tapping it with your fists) until you get the rhythm, you should progress quickly. After just under a week, I've progressed to the red ball. The headband adjusts well, it fits me without issue and I have a pretty large head. The material for the balls is soft and spongy so while it can come back and hit you, it's soft enough that it doesn't hurt.--MikeFun for all ages. Good workout without noticing your working out. Hand eye coordination seems to be improving with practice...--Joshua HolderI happened to see the reflex balls when searching items related to boxing for my son who is a boxing fan. When telling him about it, he said he would like to give it a try... Long story short, he likes it a lot since he received it.--B.Z.Bought several for me, the grandkids and for my students. Everyone that tries it enjoys it. Easy for kids to use and practice their hand-eye coordination for any sport.--ViggiI loved this thing!! When I first put it on, I could only hit it 3 times consecutively. Now, after only a few days, I'm averaging over 30 hits. It's a fun competition for the three of us in my home. I recommend--A.C.I purchased the Boxing Reflex Ball for my father who had a stroke last year. He is really working on his reflexes and really enjoys the speed bag (?) and I happened to come across your product when I was looking for a "reflex ball"(lop-sided tennis ball thingy)...Anyway, He loves it! He is getting pretty good! Thanks.--Lori Nason