I think the reason some bands are more comfortable than others is that they have 'give'. I've worn the Milanese, Sport, and Woven Nylon. The Milanese and Sport 'give' when I more my arm and wrist. It's a tiny amount, perhaps 0.1mm, maybe even less. The Sport being made out of a rubber like material stretches, while I am not exactly sure what's going with the Milanese, although I do know after a year of wearing it I now have to tighten it a few times a day. The Woven Nylon doesn't stretch or 'give' so it's uncomfortable . . . to me.