The colour of the wristband is based on a personalised risk assessment and care plan and lets staff know how mobile each patient is at a glance. If a patient has a green wristband they are safe to walk alone, amber means they need help from a nurse, red means the patient is at a high risk of falling, while a blue one means they need support from two staff. The bands are given to patients as soon as they are admitted and assessed – and the colours can change as the patient engages in physiotherapy and occupational therapy during their stay.