Benefits from 7 Core Hollow Fibre filling, which is silicone treated to help maintain shape and expand fibres with offset panel stitching allows warm air to be retained inside bag for longer. 10mm Crash Zips and rip Stop outer material Rip Stop outer material in Fox Camo pattern. Elasticated securing strap. Hot foot pocket design– zips stop short of the foot end to create a thermal pocket around your feet. Elasticated head and foot securing hoods that can accommodate bedchairs with single leg supports.