Suggestions? Please let us know so that we can share.
Definitely not this one! Here's what we suggest you look for:
a stretchy material (no wrinkles)
seam-free if possible
a durable material that is thin enough so as not to be too warm
anti-bacterial and anti-mircobial
long enough that it covers the length of the brace
provides some protection for your armpits
Cotton or bamboo with spandex usually works very well. Some people have tried turning the shirt inside to deal with the seams. Athletic shirts are good too as they are moisture-wicking You can search on-line using the above criteria, but we've given you some suggestions to give you a head start.