Not uncomfortable but still need to verify the usefulness
Tried the pads primarily to battle the issue of yellow underarm stains. Unlike some of the reviewers did not notice any "noise" coming from the plastic underlining. The pads absorb perspiration well. Problems: 1) absorbtion capacity is low (one 15 min walk in hot weather - and I need to dispose of them); 2) tend to be a bit tricky when installing in the armpits of the shirt; 3) adhesive strips tend to get stuck on the fabric when wet - require some care when removing. Can't attest to the stain-prevention effect yet - not enough empirical evidence but probably there's some value in it.
Rating: 3 stars