1-Layer
The outer shell material is sewn to the upper layer of Polyester fleece. Since this construction can lead to cold spots, we only use it in summer sleeping bag.
Thermo Stretch Comfort
Exosphere +2°, -4° & -8°Elastic seam construction allows a comfortabel, body-hugging fit without feeling restricted. Thus the bag warms up quicker and still offers fantastic freedom of movement for a good night's sleep.
