Golisano Children's Hospital / Tracheostomy & Ventilator Program / Tracheostomy / Vest Therapy Vest Therapy The “vest” is a machine that provides pulses of air into an inflatable vest. The vest vibrates to help loosen and move mucus from the airway. Nebulizer treatments are often given during vesting. It is important to do strong coughs after treatment. Bring your vest to your complex clinic visit at least once a year to ensure it is working properly, the settings are correct, and the vest is the right size