Indestructible?  Yes, yes, yes!
596208
This purchase was a gift, however, I purchased the same book for my granddaughter 2 years ago and she still has it.
2997369
They are virtually indestructable!
Photo is after 5 months of playtime.
3994947
I have a black lab who, over his 3 1/2 yr. lifespan, has been able to chew through every toy I've bought him within hours tops, except this! Not only can't he destroy it, but it holds treats better than kongs(pfft) and it contains no harmful materials in the construction! Also it even gives so he can actually get the "chomping" out of his system, still without breaking a bit! Can you say perfection? =D
776342
These things seem indestructible. I read a review that says their kid chewed through one of these. Crazy. My grandchild has autism and chews through nearly every toy he owns and I can say after several months the 2 we bought are still fine. Our puppy hasn't even been able to chew through. These are also great fidget toys.
2451798
We've had several of these. They aren't indestructible, but our dogs love them even after they're chewed to bits. It's among their favorite toys.
2173609
This has been my dogs favorite ball, and definitely the most durable. We've had a few of these balls, and they are nearly indestructible. He likes to crush the ball, and rub his teeth on the ridges, and it survives everything our dogs puts it through .
1090888
My dog absolutely DESTROYS most toys in a matter of hours or days, or maybe sometimes weeks if I'm lucky. This ball has survived Charley's teeth for MONTHS, and he still enjoys chasing it as well as chewing it. Better still, it doesn't squeak -- Charley loves squeaky toys so I try to indulge him sometimes, but MAN they drive you crazy after a while! This ball may just be indestructible AND it's quiet. Win-win!
3927883
Unbreakable.  Tough.  Playable over and over and over again.  Can be used on any magnetic surfaces.  Even refrigerator!  Loving this toy product!
2317607
virtually indestructible.  My pack of Doxie's can chew up and through anything. But this toy has given them constant fun for 7 months now. They love it. Your not wasting your money on this one
3182426
The first thing my dogs do with squeaky toys is destroy the squeakers.  The next thing they do is try to get the squeakers out of the toy.  I'm happy to say that, after months of abuse the squeakers are still going strong and are still in the toy.  The material has a few holes in places and is probably not the most durable material on the market but for it to survive a week, much less months, with the abuse my dogs dish out speaks volumes for the quality of this toy.  The only recommendation I have for improvement is to offer a version with a tougher outer material for really determined dogs like mine.  Even so, all the toys in the Invincibles line that I've tried have performed admirably.
4616512
This toy is indestructible. Our child is very hard on toys, and has yet to affect the function of this thing.
2255036
This is the first time I have been moved to review anything, but I am thrilled with this product.  I wanted a ball that I could throw and bounce, as well as withstand being chewed on by my 110# lab, and I finally found it. Until now, balls that would bounce could be punctured and finally torn to pieces; balls that were indestructible were solid rubber and too heavy to throw and bounce. My dog has had two of these Orka balls for several months now, and they are both still in one piece and bounce like they did when they were new.  The only problem I see is for the manufacturer - I don't have to buy new balls very often!
2115514
My husband and I make bets when we buy our 90 lb German Shepherd new toys.  The bet you ask, how long until he destroys this one?  I am happy to say that this ball is literally indestructable for our little guy.  He enjoys fetching it when it is thrown with the launcher, but more than anything he just loves chewing on it.  Literally every other toy we have bought him does not last.  He has 5 of these balls scattered about cause we're so in love with them and they look just as good as the day we bought them (which has been over a year now).  I would highly recommend them for someone with a larger dog who likes to chew.
3999591
Our dog destroys everything. All things. All toys. And we have bought many, many "indestructible" toys. They were all destructed within minutes. This ball is so smooth and soft that he cannot even pierce it. Going on two years now. We've added another dog to the house, and they both play with it daily. Best ball ever. We have a 90 lb rott/dobie mix (the destroyer) and a 50 lb greyhound / something (the player).
2336374
These are great for large dogs!  They are virtually indestructible!  And lots of fun!
2591029
My lab rescue child can fly through a regular nylabone, shredding it down into shards of nylon in a matter of hours. She's had this bone for over a month and it's still nearly as good as new (albeit with a lot of teeth marks). Incredible! And much, much cheaper than an antler. I'll be experimenting with some other flavors/shapes soon once she gets bored of this one, but it hasn't happened yet!
1213119
Great purchase!  Works great and seems to be indestructible!