The polyethylene foam-lined armpit support and handle has increased surface area relative to axillary crutches, reducing pressures at the device-user interfaces. Polyethylene foam was selected for its high level of cushioning that contributes to an ergonomic feel.
Axillary crutches have a total device-user interface area of around 106.4 cm2 (axillary support and handle combined). The Ergo-Crutch offers a total device-user interface area of 341 cm2.
The indents in the axillary support were designed to interface seamlessly with the load cells implemented in the electronic system.
Handle with polyethylene foam padding. 
Axillary support with polyethylene foam padding.