Coban, a type of self-adherent bandage, is expensive when you use it frequently. After dressing a leg wound, twice a day for 3 months, I found out that a roll of self-adherent bandage didn’t last very long. One day I was in our local Tractor Supply Co store walking through the farm/horse section. I saw packages of 4 Coban self adherent bandage rolls. Most of the rolls you purchase online and in general stores are 2″ or 3″ wide. These were 4″ wide x 5 yards long so they not only cost less, but were also more durable.