Treble based sound waves are delicate and can be easily distorted with bass waves; resulting in loss of clarity (Beats by Dre). The design is superior with the internal neoprene along the front of the shoe keeping those annoying pebbles from entering the shoe. Sennheiser GSP-370/670 - all reviews say they sound great but pros end there. Sound stayed clear. As Im not as young as I was, so maybe thats not a bad feature since itll slow my hearing loss. I actually like the feel of them better on my sensitive arthritic feet than my Ugg?s with similar treatment applied. This compares to TCL 10L 4G at 9Mbps at same location. Anyway welcome to the year 2019 because these shoes are lite weight fit as if your ?almost ? barefoot the front of the shoe is raised so you don?t stumble, there is noticeable support, lightweight, airy so they don?t sweat, look modern and I got charcoal so they go with almost everything and don?t show dirt (but you can throw them in the washer if you need to). Touch pad works greatNo interference with other devices! Pero si eres una persona que busca una talla justa, pide medio punto menos, en lo personal me gusta usar doble calcetón con zapato de senderismo y que los dedos del pie no me topen con la punta, así que para mi es ideal!