- Loft expander system
- Airthermo insulation
The body length of the mummy-shaped Glacier sleeping bags is 195cm and all have AirThermo insulation with construction tailored to provide good levels of warmth in all situations to suit intended use. The top half can stretch to quickly increase loft and insulation by pulling the PFC-free liner and upper apart when the bag is unpacked or the occupant moves during the night. This also reduces any extra internal space that might sap body heat without compromising comfort.