The quest sound is. This is my fifth pair of Sperry duck boots. Its robust, stylish, works as designed, and I cannot think of a better option to keeping my pods in pristine condition. The sole coming loose at the front is a tripping hazard. Instruction is good enough for me to set it up myself. The bolt heads are a little too big for some t-tracks - require that I file them down to fit. I looked around for GREAT value for money phones and came across, almost by accident, this phone. Once on, they did not feel secure. Fits but there is no cushion. I can buy better quality slippers at Wal-Mart for much less than what I paid for these, but except Wal-Mart didnt have a XXXL.