Abstract: IMPROVED DECKCHAIR, constituted by a monobloc chassis (1), a back (2) and an adjustable, articulating support frame (3) of the back (2) that has openings (4) on its front and back crosspieces capable of attaching the ends of a canvas provided with orifices or perimetral buttonholes (5a) which, together with other orifices (6) surrounding the deckchair, permit securing the canvas by means of zigzag lacing (7). Another row of orifices (8) has been provided on said front and back crosspieces for alternate mounting of small boards (9) that are also transversally secured by tongue and groove means to alternately replace the canvas. The chassis (1) is flat with rounded edges, with the peculiarity that three different performance alternatives (1a, 1b, 1c) can be obtained from the same mold by means of respective changes in the central part of the mold, thus permitting its stacking (FIGS. 10 and 11).