Abstract: A method of assembling a floatation device and a floatation device is disclosed. The method can include providing a casing having an upper fabric layer and a lower porous layer. A plurality of dividers can be connected at a first end to the upper fabric layer and at a second end to the lower porous layer. Edges of the upper fabric layer and the lower fabric layer can be connected by a zipper. The upper fabric layer and the lower fabric layer can define a chamber therebetween, and the plurality of dividers dividing the chamber into a plurality of sleeves. A plurality of foam floatation members can be installed in a respective sleeve of the plurality of sleeves, and the zipper can be closed to form a floatatable platform.