Cleantech Blog has featured Keetsa mattress as its favorite green product of the week. The writer personally owns a Keetsa Plus, as shown here, and other than the comfort it provides she also says:

One of my favorite things about the Keetsa mattress is that they can be compressed and rolled into box – that means that while 140 conventional mattresses can fit on one truck, 540 Keetsa mattresses can fit in the same space.

You can read her review here.