Seems like almost every time I put a cup in the cupholder, when I go to take a drink, the rubber insert pops out, stuck to the cup. If I take the inserts out, then the cupholder is too big for most normal sized cups. Was considering screwing them down, but its nice to have the option for larger water bottles like the Hydroflasks. I also thought about rubbing some silicone or something on the inside. Curious what other people have done with this? seems like a halfway thought out design, like many things on cars seems like the designers never have to actually use stuff.