These are a great value buy. Martens did not think this through better. I have very sensitive skin, so maybe this wont be an issue for most. Details:Sound quality: Noise cancelling is on par with the sony and bose. Ein himmelweiter unterschied! I spent a lot on the watch and this is a small price to pay for total protection of my screen--and in multiple colors if you want to use more than one! Fitment was ok, could have been designed a little better to fit. The instructions (which are silly) are like a 3 year old translated them. Everyone complaining the left didn’t work, but if you read the directions it clearly states sync the left pair by itself. When we first get a new pair I usually put them on her and get her entire foot wet with the sandal on and then let her wear them until they dry completely- this helps to loosen the straps a bit and lets the sandal form more to her foot.