Memory Foam Novaform Mattress Toppper on sale at Costco July 28, 2005, 05:08:23 am Yahoo Message Number: 56180We have a '97 Twin/King and bought a Cal/king Mattress Topper (78"x80") thru Costco"s catalog a few months back and cut two pieces for our twin bunks (31"x78") and four cushions (18"x19.5") from the one mattress. The mattress cover that comes with the mattress can be cut and sewn to cover both mattresses. By careful planning, the three sided zipper can be utilized to make a two sided zipper for each mattress, however there will only be one zipper "pull" but zipper parts, including pulls and stops can be purchased at JoAnn Fabrics to fit the mattress zipper. Cutting the foam topper is a breeze using an electric bread knife with the reciprocating blades. I found one at Goodwill and paid about $5.At Eaze in Olympia "97 TK