http://www.tennis-point.com/products/en ... X-4er.htmlTretorn Micro X 4er
Launched in 1998 ! MICRO X ! set a milestone in tennis ball history as the most technical and revolutionairy ball in the market. Neither pressurized nor pressureless, the micro cellular technology is patented worldwide and recognized by the ITF as the pioneer in a new category of tennis ball.
The patented secret with MICRO X is the Tretorn exclusive 3 piece technology where the inner core is powered by 700 million air-filled micro cells. The result is a highly playable ball that does not lose performance over time...and is equally good for competition as recreational play.
Combining the best of both worlds, MICRO X is by many considered the most complete and ultimate tennis ball for the majority of all players. It is not only a great alternative for play in colder climates and conditions but also for play on higher altidude.
MICRO X is the official ball of several national tennis federations and used by many tennis clubs in both tournament play and training sessions. In addition, MICRO X also have a highly designated, distinctive product packaging, guaranteeing that the balls look as good as they feel and play.
This is a copy of the message that was attached with the photo
And here is a link to the imageProduct alert! There are tennis balls made by Tretorn called "Tretorn X" that contain an inert substance which presumably helps with the bounce. However, when the dog pops open the tennis ball while chewing, the substance makes a terrible gooey mess in their mouth and presents an aspiration hazard. I was made aware of this by a client who's dog had a bad experience with just such a tennis ball. Here is a picture of one exposing the material inside.It seems that the material is non-toxic. However, it still presents a potential injury problem. Make your friends aware!
http://doguniversity.net/2012/04/18/tre ... y-to-dogs/