Abstract: An improvement in inflatable tents includes a mattress element that has a manifold system for inflating that mattress element and fluid check valves that co-operate with fluid check valves on various accessory items to inflate such accessory items via the mattress manifold system. Attaching means are located on the mattress element and on the accessories to releasably couple various accessory items to the mattress element. The mattress thus can be used as a raft, as a bottom to various types of tents and the like.