Comfort is great, I wore them for maybe 3 or 4 hrs today. I have had the conventional Crocs and I find them comfortable for summer wear. The shirt was dripping wet when I finished. But never has a shoe looked so bad after a short time. ” With their app, it sounds much better. Music is rich and detailed with ample bass, clear treble and great vocals. So I actually bought this for my sister after already owning a pair. Happy with my purchase. That alone is worth 10 stars. Viv is actually an intelligent woman with a burdensome health issue.