Climbing out of pack n play.

Ch

For travel we use a pack n play for my 18 month old. He just recently realized he can climb out, and with ease I might add. He’s just a little too tall that he can lift his leg up and over and pull himself out. We tried keeping him in a sleep suit, but he knows how to unzip it. I’ve seen those little tent things that go over cribs, but I’m not totally sold on those working. My question is what did you use for sleep while traveling with your young toddlers who were no longer able to be in a pack n play?

Thank you in advance for any advice!