A baggy jumper should be fine. As long as they can get access to your upper arm. It usually goes in just above your elbow joint. I’ve had three altogether and it’s really nothing to worry about :) 

I had mine taken out yesterday nothing to it, mind you he did worry me when he said he was off to get the shears putting it in was no trouble either didn't feel a thing, don't worry, now looking forward to having a bath.

Thank you for your reassuring reply x

Hi it was painless going in and coming out the only bugbear is having to have it flushed every week but it becomes the norm I wore a over over it as it was summer.and had a sleeve for showering.Sending my best wishes

Thank you x

Thank you x