strictfather
Similar to what others said in this thread.
It is not too uncomfortable(as it is made with my measures),but can feel it a bit,usually.However,if I'm focused on other things,I can forget it a bit.
As @Ines said,there is situations in which you feel it more,when sitting,especially when trying to cross legs,for example.When laying on my bed too,as I have not much other things to focus on,and even more as my urges are often stronger(probably because I'm used to masturbate at night,before sleeeping),I think a lot about my belt and feel it well.
But,physically,it is not that bad.It is harder emotionally,psychologically,and,obviously,sexually.