I spoke too soon. I've got a Prolite+, but it's a regular, not a short. The short pad is an REI Lite-Core. I don't recall the specifics, but it is supposed to be 1-1/2" thick, like the Polite+. I use the regular for basecamp or canoe camping, when I'm not so concerned with weight. I use a Z-seat pad under my feet in the cold. The Z-seat is lighter than a self inflating seat pad and makes a good pad for standing on.