How tall should playpen sides be?

[Jenibelle]

Is a foot tall enough? Should they be taller?

[CMB]

I would make the sides a bit higher than your hamster is long.

[Tildauk]

Hamsters can jump! And are very ingenious and sneakily move things to get them higher too

[Jenibelle]

He won't be in it unsupervised. But I just want to make sure it's tall enough that he won't immediately try to get out of it xD

[Jenibelle]

Please let me know which one you guys think is most suitable size wise. I'm having a hard time figuring out how large the playpen should actually be!

90cm in width
Amazon.com: Funny Pop up Hexagon Polka Dot Kids Toddlers Ball Play Pool Tent Carry Tote Toys by FEITONG: Baby

This one is the same but comes in 3 additional sizes; 100cm, 130cm, and 150cm.
Amazon.com : E Support 150cm Foldable Portable Playpen Ball Pit Pool Playground Great for Children Kids Fun Outdoor or Indoor : Baby

I'm assuming bigger is better?

[Mollie]

I always aim for 60cm / 2ft high as this seems to be pretty secure and yet it's low enough to step over!

I use Correx for my play pens - I'd be wary about thinner plastic getting gnawed through but if you're supervising it should be ok I would think.

[Jenibelle]

I bought the biggest one. I need something that folds up flat for easy storage. But he will only be in under constant supervision ^.^