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.