Down Bags

The largest Exped Downmat, longer and wider than the standard size.  Huge warmth and comfort for very cold places and/or maximum sleeping comfort.  Heat loss is dramatically reduced with down insulation inside the mat, as demonstrated by EMPA, the Swiss Federal Labaratories for Materials Testing and Research, and field tests by expeditions. The thick cushion of air also provides comfort and smooths out uneven ground. And as down compresses extremely well, Downmats packs smaller than other insulated mats.  An integrated pump allows quick inflation without the risk of losing or damaging an external pump.