Need a play pen that won’t move and puppy cant climb out of.

I have a 10 week old Beagle, Jack Russell, Lab mix puppy. She’s takes after the size of beagle and jack Russell so she’s not big. However i’ve had two play pens and she has managed to learn to climb both. One was a 24” plastic from walmart, then a Metal 32”inch from amazon. The plastic one was good about keeping shape but it was easy for her to get out of. the amazon one just doesn’t have bracing to keep shape but it took her less time to figure out how to get out of the metal one than the plastic.