B Lance: MH made a Kiva (4.6#) and a Kiva Lite(mine is just under 3#).

It appears that MH has discontinued both.

The Kiva Lite is comparable to the SL3. The Kiva Lite weighs 8oz more but is 6 sq ft larger and has a snazzy little window :-)

The nicest thing about the SL is they seem to frequently be on sale.