Set this up in the backyard so the dog has room to stretch out, and the panel height keeps her from hopping out. The double-latch door stays shut even when she bumps it, which was my main worry.
The double-latch door is the part I appreciate most—my terrier figured out how to nose open cheaper pens, but this one stays put. It's also light enough that I can drag it from the living room to the yard without help.