We just found them too! We bought the smallest size [Simple Solutions] and Toto can practically walk right out of them so I did a little stitching and now they fit perfectly. We only use them when we fly, just in case she can't hold it while in her carrier ... so far she hasn't tee teed in a single one!
They are great because the tabs are like velcro and you can take them off and put them back on. The only other problem we have encountered is the thickness between her little legs!
No solution for that, but that's OK because she just curls up in her carrier ... it's a hoot to see her waddle with the diaper on!
