Weight: 1300 gram - 143x143 cm.    This is the same bag as The Jerven bag Original, about 1,45 x 1,45 meters, folded as a wind sack. And, its lined and padded with PrimaLoft. That means, that it is not only heat reflecting, but also heat insulating. In addition we have almost eliminated the condensation problem.   During testing in the winter of '95 we had, inside The Jerven bag Thermo, a rise in temperature of unbelievable 29º C. (52,2 °F). Outdoor temperature -14º C. (6,8 °F), and inside the Jerven bag +15º C. (59°F). The only heat source was the person inside the bag! The Jerven bag Original reached +9 C. (48,2°F) in the same test.