Pressure ulcers develop when the skin and underlying tissues are subjected to pressure, friction and/or shear, and, in many cases, moisture. These factors lead to impaired blood supply and injury to the skin and underlying tissues. Patients being cared for in intensive care units are particularly at risk of pressure ulcers because they often lack the ability to change position independently. Also, their consciousness and sensory perception are impaired due to sedation and anaesthesia, diminished circulation and malnutrition. This article examines pressure ulcer prevention in this vulnerable group of patients and outlines the five-step SSKIN (surface, skin inspection, kinetics/keep moving, incontinence/moisture, nutrition/hydration) pressure ulcer prevention care bundle.