Outcome A, a hard vacuum-insulated flask and carrier bag, offers enhanced thermal performance, allowing for 24-hour infusions. However, the large, heavy, and rigid body restricts patient mobility. Disguising its medical functionality, the device is encased in a carrier bag that conceals the flask, and optimises convenience for on-body wear while managing the PICC line.

Outcome B, a soft insulated cooler bag, exhibits a reduced thermal performance, necessitating an ice pack change every 8 hours. Despite this, its soft and lightweight design significantly enhances comfort and practicality for portable use. To enhance functionality, the outcome integrates a powered cooling system to compensate for the shorter cooling duration, facilitating comfortable and uninterrupted sleep for the patient.