Pros: Great value, durable, soft elastic, one size fits all
Cons: Only available in white, though variety of trim colors is nice; thin fabric
I purchased this cover to use as a back-up during a buy-one get-one sale and ended up liking it much more than expected--it is not a second choice but a go-to. The rise and waist snaps come in enough settings that the cover is very adjustable and my baby has been able to get a very good fit as she has grown over the last 11 months. I love that the rise snaps fasten easily and don't come undone!
The Econobum cover does not include any internal/double gussets but the adjustability allows it to contain EBF blow-outs pretty well. I love that it is possible to get a snug fit without leaving any marks on baby's skin. The fabric is thin, which makes it less opaque than other covers, but that makes the Econobum softer, more flexible, and more breathable than some others. I have a small stash and launder frequently, but my Econobums look almost like new. When I made a laundry mistake that weakened my other waterproof covers, the Econobums were the only ones to remain unchanged. I really didn't expect them to be this durable.
While this cover is probably meant as a frugal workhorse rather than a fashion statement, I think the Zinnia and Midnight trims are actually very cute!
My only complaint about the Econobum is not about the cover but about the prefold insert. I generally use snappied prefolds in the angel wing fold or bikini twist, neither of which can be done with my Econobum prefolds (but the cover works great with other prefolds folded this way). It is meant strictly for trifolding use, which means it can be a little bulky on a young infant. That said, it does seem to be truly one size fits all, and it really has grown on me as my daughter has become taller and more upright. The prefold is very absorbent and soft, a nice bonus to one of my favorite covers.
The first two photos below show the cover on the tightest setting, with the insert trifolded in the "short" direction and the cover unsnapped with the prefold folded in the toddler/"long" direction. The third photo compares a year-old Econobum prefold with a new, unprepped one.