Sorbus Storage Large Basket Set, 3-Pack

Sorbus Storage Large Basket Set, 3-Pack

wish these were big enough to fit in a Kallax ikea bookcase but they appear to be way way too small.

thanks amazon reviewers who put up photos - that really helped me

Do these have a flat bottom? Or an insert or some kind of support for them bottom?

@jaxalicious here is the amazon page:

https://www.amazon.com/Sorbus-Storage-Large-Basket-3-Pack/dp/B079K89RPC

Comments said no on a bottom insert.