If you're looking for a method of concealment that keeps your pistol secure, then this is a solid option.  The fabric is spandex/microfiber which is comfortable and helps with moisture dissipation.  If you do tend to sweat a lot, though, it's best to wipe down your tool with oil to prevent rust.

There is adequate padding bilaterally for tandem carry or for ambidextrous use.  I have put full sized pistols into this without issues.  I wear a button down shirt over it and it's very good at concealment.  The weight of the tools are distributed over the reinforced linings of the shirt.

Overall, it's a solid purchase, and I have 3 of these for a rotation.  I find it more comfortable than shoulder holster carry due to less weight and less bulk.

Highly recommend.