customary in the weaving art to indicate that a particular warp yarn goes over a given weft yarn by marking the corresponding square with an x likewise a blank indicates that the warp goes under the weft the weave pattern is repeated in each direction the warps and wefts of the woven fabric may be selected from a variety of suitable yarn materials including synthetic materials such as polyamides and polyesters preferred polyamide materials include nylon 6 and nylon 6 6 a preferred polyester material is polyethylene terephthalate 34 pet 34 one of skill in the textile art would readily be able to determine the appropriate denier for the particular yarn material selected for polyamide yarn a denier of about 210 840 is used while for polyester yarn a denier of about 220 1000 is used depending upon the particular filament or yarn used the denier can be between about 200 and 1200 in order to provide a seamless floatation device the first and second fabric layers are interwoven at an outer margin so as to form a fabric chamber for accepting an inflation medium the art of weaving is well developed and the fabric layers may be interwoven using any suitable.