Nia カップホルダー

I was skeptical about the expanding fit claim, but it really does grip my toddler's sippy cup and my own water bottle equally well without wobbling. The attachment to the stroller chassis felt secure right out of the box.

Finally, a cup holder that actually stays put on the stroller frame and doesn't slide off. The expanding fit easily held my large coffee cup and didn't spill a drop, even on bumpy sidewalk cracks.

The expanding fit is the selling point for me—my toddler's sippy cup and my own water bottle both slide in without wobbling. It clips onto the chassis in seconds and stays put, even over bumpy sidewalk cracks.