1100 denier or 1100 dtex of PVC fabric for inflatable boats
The majority of inflatable boats on the market today are built with polyester fabric as a backing of PVC fabric. Most of the others use nylon. If you are able to determine the weight of the fabric, it will be a figure expressed in either denier (pronounced den-yea) or decitex—the weight in grams of a 9,000-meter-long or a 10,000meter-long piece of yarn, respectively, from which the fabric is woven. Denier is the industry standard by which all fabrics are measured. Expect a denier of 800 to 1,200 or a decitex of 900 to 1,300 on extra heavy-duty inflatable boats, less on less-expensive inflatable boats. Nearly all life rafts are constructed of 400- to 600-denier fabric (nylon or polyester) because heavier fabric would make the raft cumbersome and hard to launch and because life rafts are designed for very infrequent use.
Read more about PVC fabric used in constructions of Saturn Inflatable Boats.