Large Roll of Medical Grade Waterproof Fabric

Large Roll of Medical Grade Waterproof Fabric.
Roll is 2210mm wide, length is unknown.
Fabric is wrapped around a 60mm diameter tube, total roll diameter is 165mm.
Unknown specific makeup of fabric material. The top surface is a dark blue/grey colour that apparently water proof or water resistant, see photo of water drop. Backside of thin fabric is a white wolven material.
Condition - New unused partial roll. Top layer and ends may show dust marks from our warehouse, etc.