Can the size be modified?

Yes. Simply remove the pad from the shell and trim it. Then reinsert. If necessary the cover can be folded and taped to fit. We have used sticky-backed velcro to hold the folds.

Padding of up to one inch can usually be added inside the cover due to its elasticity

Cohesive bandage known as Co-Flex wrap works well also and does not stick to the device.

It is available on our site or at pharmacies or sporting goods stores. In pet stores it is called Vet-wrap( same stuff)