Chub c9 bed chair sleeve the chub c9 bed chair sleeve is designed to encapsulate the standard and jumbo size chub sleeping bags giving additional warmth and protection from condensation and damp conditions the thermal sleeve can also be used as a lightweight bag during the summer months and has a polyester oxford weave outer cover and an internal full green pile fleece lining supplied complete with bed chair attachments and a stuff sack chub c9 bed chair sleeve polyester oxford weave