Cohesive bandages are coated with a self-adherent substance that gives the bandage the ability to stick to itself but not to skin or clothing.
A cohesive bandage (Coban) may be used to apply light pressure and support such as in the management of sprains and strains or during rehabilitation following orthopaedic surgery. It is also sometimes applied as a cover for paste bandages used in eczematous skin conditions when it serves a protective and retention function. Cohesive bandages are sometimes used as the outer component of a multi-layer bandaging system. In this situation, the bandage has a dual role in performing a retention function whilst providing a degree of compression.