On a Mountain Buggy Duet: The clip can only be attached leaning toward the center-line of the stroller thus encroaching too much into the other child's space. Once attached, you also cannot use either canopy, requiring you to use the tiny canopy that comes with the clip. These should be easily fixed design issues. BTW, concerning the Duet - this is not the stroller for you if you have a two and a half year old who is in the 95% and greater for height and weight. If this stroller had an extra 2 inches headroom and was 3-4 inches wider it would still be narrower and more maneuverable than other strollers but should fit all children.

I have a Click Connect 30, so I was a bit nervous since this says 32 and 35, but I didn't see another Click Connect option, so I went with it. My car seat clips right in! So if you have a 30, don't worry, this will work.

The clip works as designed, we have no issues. Would recommend product