great ball, tough and sturdy
924834
Perfect 5" size for the mini pro over the door basketball hoop.  The inflatable basketball that came with the hoop got a hole in it, so the Rhino Skin ball is a replacement for it.  We love it.
4477728
I have a strong chewer. She has destroyed so many toys until I found this ball! She loves chewing on the nylone bone and get's to chase it too! You can throw it, bounce it or just let them chew on it. It's a great multipurpose toy. I would recommend this for heavy chewers!

UPDATE: I've now had this toy for four months and the toy is still in great shape. The nylon bone is starting to show some wear, which isn't out of the ordinary sense my dog spends hours a day chewing on it, but the ball is still in perfect shape and does not have one dent or tooth mark in it. This is the longest a toy has lasted in my household. I believe this ball to be incredibly sturdy and worth ever bit of the price! I recommend this for strong, destructive chewers!
598339
I was happy to find a ball that would stand up to lots of wear and tear without poor quality 'fuzz' on normal tennis balls being a possible problem for my dog's teeth. They're strong and still have a great bounce. My dog doesn't like squeaking toys a lot, so this version was perfect. It was a great price for the number received, as well.
4108223
This is a very sturdy, durable medicine ball. The grip is good, weight is even and it does not give. I bought this for p90x2 along with an 8 lb version and my only regret is the cost since I could use two more.
4788576
This is the best ball I have ever purchased. It seems indestructible! It gets chewed, chucked, and smashed daily and still has the same shape and color. I will definitely buy more of these! (Not sure when because they last so long!)
3592989
Love it, awesome ball!  Takes some practice to dial it in, as with any new ball, but once you do it is lethal.
1382880
I have bought this ball 3 times over the years for my 90 pound Golden-Doodle and he loves it. It has lasted a very long time and really takes a beating.
2410115
Got the Cricket Tennis ball which is hard and last long
1556410
i purchased this ball it has a very durable and great quality ball. I had no problems with mine. Besides the customer service with the ball is wonderful. had no trouble putting mine together.
2943918
This particular bouncy ball has been tough enough for my 6 lb poodle.  I have purchased other atomic super balls and they are soft and break apart easily, save those for a cat.  These have been well made, and when the rottie or lab get ahold of them they'll hold up (they like to tease the poodle).  My poodle is very high energy and this has been her ball of choice for the last 12 years.
477204
I've got a spot in my boat cover where it sags and collects rain water. I place the 75cm version on top of a bucket to help hold it up in the spot.  While this ball does lose air over time, I can tell you that it is super tough! On multiple occasions I've roughly bounced it around on my gravel driveway when playing with my kid.  I've let her jump up and down on it (while I hold her hands). I've played catch with it by forcibly throwing it at a concrete wall to have it bounce back. We've used it for massive kickball. I've bounced up and down on it pretty hard and I'm not a little guy.  This thing is 5 stars TOUGH! The rubber seems pretty thick on it, so I'm sure It'll be around for quite a few years.
When I first got it, the plastic/rubber smell coming from it was pretty bad.  But it subsided after a couple days, and after being outside for the last few months it's pretty much gone except when you have your face right up next to it.
1108081
This is my second nobbly wobbly ball (I've had the first one for nearly 5 years!) and it's a great, nearly indestructible ball.  I've got 2 dogs, 1 cattle dog & 1 shepherd mix and they have a great time with this ball.  It rolls every which way and keeps them on their toes ;)  Keep in mind that this isn't intended as a chew toy so keep an eye on your furry friends when they're playing with this ball.

I use an old nobbly wobbly ball in my shepherd's food bowl to slow down her eating.  I pour the food right into the ball and she has to knock the bits out with her snout.  It does the trick and she has fun while she's doing it.
3324974
My 1 year Siberian Husky is crazy about this ball! I suspect it will hold up well. She's rough with toys but this ball is super tough!
4441122
This ball is really great. Very durable and strong.  Easy to inflate.
I will definitely be buying more balls in the near future
3168695
This ball has lasted us almost a year (and would probably survive longer if we hadn't left it outside in Arizona). My dogs are big chewers and I am super impressed with how well this has held up. There are some slight puncture marks, but they have not yet managed to bust through the integrity of the toy. We will definitely be ordering more of these.
2824219
This is indeed an un breakable ball.  My dog absolutely loves it and has figured out how to pick it up ..it has little holes surrounding the entire ball. It keeps her interest and is her go to toy. Sadly she eats tennis balls so I got this to see if it would work and it did.  It is holding up perfectly after year. She is a 60 pound shepherd who none stop plays!

My only caution is make sure you wear shoes if you're kicking it around because it is a very heavy ball and you will want to throw it away from your dog not at them since its heavy duty.
2768568
Without going into the numerous benefits of using a heavy ball for training, this ball works like a charm. It's balanced and round, and the surface is very durable. We use this mostly outdoors, and it shows no wear.