4-Season self-inflating mat for 2 persons TRAIL DBL with ratio of 2.72 Tog. It has been tested in accordance with BS EN 13537. Its strong and pleasant to the touch outer material (75D polyester with PVC coating) protects from moisture. A used insulation profiled PU foam with open cells structure provides adequate thermal comfort while camping or trekking at low temperatures. Presented mat is extremely simple and easy to use - just unscrew the valve, a mattress in a few minutes be filled with the air. P> Compared to traditional foam pads, Isomats are more comfortable, warmer and have smaller dimensions when folded. Mat non-pneumatic TRAIL can not be put on eg stones with sharp-pointed edges, as they may be punctured. However, if by chance you forget, you need not worry. The Producer included a repair kit in the form of a patch and a tube of glue. Mat TRAIL DBL is offered with a handy carry case. P> The coefficient TOG describes the thermal resistance - the level of heat insulation from the ground, comfort. The higher the index the greater the Tog thermal properties at a lower temperature. The standard for mat 1-3 season is 1.5 to 2.5 Tog, for 4-season mat from 2.5 to 4 Tog, the mat 5-seasonal (expeditionary and arctic) above 4.5 Tog.