Self-inflating mattres Trekker stretch is a new variant of the popular model Trekker. Thanks to the stretch surface the mattres perfectly removes and compensates for uneven terrain, so creating a comfortable sleeping place almost anywhere. The surface material used is also more resistant to damage and prevents slipping of the sleeping bag. The area under the back and sides (Warm zome) is lightened by horizontal chambers and therefore there is more foam to increase insulation. It is equipped with a Reverse valve for faster inflation and deflation.