14oz denim is a dense weave, heavyweight fabric. 150cm wide. Prewash before sewing on its own, soaking the denim fully so it is wet before you put it in the machine. First wash should be on a 30 degree cycle with a low spin. Do not tumble dry. Once the garment is made, wash it inside out. This is a versatile old school  fabric which lasts forever and improves with age. Good for interiors, bags, aprons and jeans. Suitable patterns are The Strand, The Trapeze, The Foreman. And of course aprons and bags.