Overall, these are great shoes. Very useful for bug spray, extra straps, locks, gear, etc. This is a great replacement for the original if you just want to use it for sound mixing/monitoring, or just listening to music. Hello,Let me start by saying that I love Sennheiser the brand. These things get loud, you can easily hear a song just by dangling them around neck at max volume and so far no distortion or static. Battery life seems to be slightly better than the packaging indicates. I just tried one one because the other was missing the closer. Ok, this a little complicated. My last Bose Acoustic system was purchased in 1994. After loving these cute cozy booties for a week, I sewed a pillow cover from a piece of cotton.