I've experienced so many tracks for trains and cars which once assembled start to come apart when in use. This can be frustrating for very young children as they have to keep 'repairing' the track and it interrupts play. But this clicks together and stays together - even on thick carpet (where other tracks seem to really struggle) this stays in place.
This is the perfect accompaniment to the Take Along Thomas trains as, like those models, it is extremely sturdy and will easily survive the rigours of toddler daily play!
The track forms a rather unexciting shape but play is only limited by imagination and the trains run smoothly on it and don't jar on any joins. As the other reviewers have said, it comes with adaptors so that it can be used with the old-style track, so if you have any old track (or come across any bargains!) you can still use them together. This newer track is actually easier to clip together but it's good to know that the manufacturer has factored in that owners of this track may also have existing collections they wish to use. If you are starting your track collection with this pack then you have the security of knowing that if you pick up an older playset (they are still readily available from many retailers) then you are not going to find it is incompatible.
In a nutshell: Tough track which isn't tough to put together. Enough said!