Polyurethane laminate (PUL) is a polyester interlock knit fabric
that has a very thin film of polyurethane laminated on one side. It is useful as a water barrier but is very thin and
breathable and can be machine washed and dried. It doesn't feel plasticky like PVC; it's very soft. Cloth nappy
outers are often made from PUL.
The absorbent pants have a layer between the outer fabric and the towelling gusset so
you cant feel it at all. The baby mat has a PUL backing and edging, but it feels extremely soft.