We have given up camping on snow in preference to using huts in the winter, so we no longer require our Stephenson's DAMs. They are 70 inches long, 27 inches wide at the shoulder, and weigh 22oz. I want to sell them as a piar because we only have one pump sack and it makes postage more economical. The only thing odd about them is some velcro glued to the bottom side of the mats. This originally held our double quilt in place and the two mats together, but we've also found it stops the mats from slipping on silnylon floors.
Will consider US$150 for the pair, including standard economy airmail (10-25 working days, no tracking or insurance). You can get it faster (international air 6-10 working days) for an extra $10, or even faster (economy courier 2-6 working days) for an extra $25.
If interested email retropump AT gmail DOT com