Picked up the ATC Ocelot last week from Marty and Jeff. Being the cheap one of the family, I opted out of the mattress to use our T-Rests. Ohbejoyful (O told me that would definitely not work after one night. So we got a mattress from ATC - don't pass it up! Made those 12 hour nights incredibly comfortable. Camper in Owens Valley, hiking in Utah and the pup was cold. After 45 years of tenting (and many nights of no tent on bivouacs) having a pop-up camper is, as I have been telling friends, ridiculously comfortable. Continued through the Owens Valley and on to Utah. Need to finish out the camper with cabinets, but getting ready for the next trip already.