I'll be using this as a cover for a thinner (plastic/resin) bowl, so the lack of drainage holes isn't an issue.  The label states that the material, which is a lightweight combo of plastic, sawdust and ?, won't crack or split with drilling.  I like the rim, which will be good for gripping when I'm moving the pots, and the wide stable bottom; not as easy to tip over on windy days.