according to one aspect , embodiments of the invention provide a recreational floatation device comprising a body portion comprising an inflatable member having a first inner perimeter surrounding a first inner area , a first support portion comprising a layer of material extending through the first inner area and attached to the inflatable member at its first inner perimeter to support a user of the device , a back support member located within said first inner area , a hinge mechanism coupled to the back support member and the first inner perimeter and configured to allow the back support member to rotate between a first position , wherein a substantial portion of the back support member extends generally away from the first inner area , and a second position , in which the back support member lies substantially within the first inner area .