Three ear inserts comes with headphones for different ear sizes. I just keep staring a them and smiling. I love slides/mules but foot surgeries have made it hard for me to wear them. It is a cute little thing. La durata della batteria è notevole e la ricarica nella custodia è rapida, in circa un ora sono nuovamente pronti allutilizzo. No missing pieces. I do think this is made for bigger heads. The setup section is especially good, where you can dig deep and then even deeper into fine tuning controls that are accompanied by icons representing your speaker locations (which it knows without you having to tell it). But I was instructed to buckle myself in and ta-da! During the first 5 miles on a fairly smooth gravel road the mount loosened and allowed my phone to flip backwards.