I notice them but not frequently. They are a little sore sometimes, and if I carry something resting on my chest or walk into a doorway or something, that can hurt quite a lot. Occasionally they’ll get in the way of positioning my upper arms, but they’re not big enough for that to happen often. They can slip sometimes if I’m wearing a bra, so I have to readjust em for comfort sometimes. My nipples don’t get very hard, but they’re sensitive all the same and if I’m not wearing a bra the fabric sliding over them can feel really good. Annoyingly so, much of the time. But I enjoy having em - my chest stays pretty warm, it’s pretty comfy to lay on my front, and I like what they do for my figure! The feeling of them being held in a comfortable bra feels nice, not really in a sexual way, but it’s like a warm hug.