OUR WINDSOCK BODY BAGS ARE MADE OF DUPONT TYVEK BAGS MEASURE 14" WIDE AND 19" LONG WITH HEAVY DUTY COLLARS SEWN IN THEM WITH GROMMETS ALL BAGS HAVE DRAIN HOLES AND DESIGNS ARE SCREEN PRINTED HEAD AND BACKBONE ARE ALL ONE PIECE MADE OF 4MM COROPLAST ALSO HAVE INNER BAG FOR LIFELIKE LOOK ON NON WIND DAYS STAKES ARE 24" STAINLESS STEEL SPRING TEMPERED HOOK STAKE JUST SLIDE STAKE INTO PRE DRILLED HOLE STAKES ALSO HAVE NEOPRENE WASHERS TO SLIDE UP STAKES SO DECOYS WILL NEVER SLIDE DOWN STAKES OUR DECOYS WILL START BOUNCING IN AS LITTLE AS 5MPH OF WIND.