Looks basically identical what keytronics shows for lifetime designer "ergo technology":
Show Image
(http://www.keytronic.com/Home/products/specs/images/ErgoColkeyv2.gif)
I've had mine a while, not sure if it has this. The Keytronics Lifetime Designer web page (http://www.keytronic.com/Home/products/specs/ltdesigner.htm) states "Now shipping with Ergo Technology", so does that imply that the older models did not? Not sure, but either way it's one of the nicest rubber membrane keyboards I've used just as salcan stated
yeah, Das just copied the art, nice job.
I think they LT Designer always had the "ergo technology", it just sounds better than "weighted keys" which is totally confusing. They keys are all the the same, some just require more force to press down.
Need to dig out my Designer and take it for a spin! It's my only keyboard that's in storage.