***Update***I was finally able to get the noise cancelling feature to work. 5 but purchased size 10 so I could wear thicker socks to add More comfort and to avoid a dirty feet. No spills, no drops, no gamer rage. They breathe really well. These work almost perfectly for needs, I use them for pink noise (a touch more bass than white noise) in the bedroom - one on either side of the room. - Die Magnete für die Front könnten noch etwas stärker sein. We will have a family gathering this month and we can just grab the mic and any night can turn into a Karaoke party! Like most Crocs, they are snug when new. Bought this for my parents whose hearing is starting to go. Easy to install 💯