They were initially too tight in the toe box and I almost returned them. High echo and a humming sound. These sandals are so comfortable, just the right amount of sparkle for a week away with the hubby. Happy waxing! This is great for me to keep my nasal cavity clean and lessen the allergy triggers. They will always sound better for the headphone they are built for. I love that they have a nice thick rubber tread so when I step outside in them the top section doesnt get wet. Here?s a photo of my daughter?s size 5 Keen sneakers next to these size 6 sandals. The sound is balanced from each side, can hear the bass well. It lasted me about under a month