Co-Flex 4" Blue by Andover. $7.61. A lightweight cohesive flexible bandage. Provides an excellent pressure bandage without cutting off circulation. This makes Co-Flex a safer bandage. Provides excellent porosity, non-irritating, allows the skin to breathe. Adheres to itself, no clips or fasteners are needed. Each roll is 5 yards long and comes in 2", 4" or 6" widths. Contains latex.