K-Four is a four layer compression bandage system.
Composed of a combination of:

K-SOFT - Sub compression wadding bandage to absorb fluid and redistribute pressure.
K-LITE - Light support bandage type 2 to aid absorbency and act as a base for compression. 
K-PLUS - Light support type 3a bandage to provide up to 20mmHg at the ankle and up to 15mmHg at the calf. 
Ko-FLEX - Cohesive bandage to offer additional compression and maintain position of the other layers. 
K-Three C - High compression type 3c bandage providing the extra pressure necessary for ankles > 25 cm. 
K-Four is used in the treatment of venous leg ulcers.

K-Four are available in 4 size options:

800018 < 18cm
801825     18 - 25cm
802530      25 - 30cm
803000   > 30cm