Hardly any of them are filled. But each next one lives shorter life. Loved my first pair of Keens last year but found them (the Clearwater CX) a bit thin soled for my only holiday pair of sandals making for tired feet - so bought these bulkier ones. Oh well, lesson learned. ANYWAYS, I AM NOT GONNA SPOIL THE MOST SPOOKYPART. She says theyre super soft and comfy and that the memory foam helps her sore feet. It?s so cheap and disgusting. If you have to run to codes every night, I probably would stick with tennis shoes like Brooks, but if most of your work involves walking/standing and not running emergently, these will work. Then they gave me this thing called a boot, which Im sure many of you are familiar with. To me, thats music neutral, whether its shrill or boomy or piercing or lacking bass - whether or not its "fatiguing" or "relaxed" or "warm" or sibilant or otherwise uncomfortable in some way - thats the music, and real music varies considerably.