OK, I have a second job to support my Malinois.  She is 75 lbs of energy.  I have used the chuckit to keep my sanity and the ultraballs generally hold up well for a few months of daily play.  I saw these and thought they would be similar.  I am not straight up telling you my dog put her paws on one of these, grabbed it with her teeth, and ripped it in two in 2 seconds flat.  Subsequently, each ball was shredded and dangerous within a few throws.....for a large aggressive dog these are worse than tennis balls which everyone knows are bad.  So Chuckit company gets blessings for keeping me sane by extending my throw and wearing the dog out after equivalent of 1.5 miles sprinting (her not me).  Vendor gets 5 stars for delivery and there was nothing false about the advert per say.  However, IMHO, Chuckit should basically say, "If you dog is comatose or edentulous and ways less than 10 lbs, this is the ball for you......everyone else spend the money and by the ultra ball.