I was nesting when I bought this thinking it?ll be a really easy assembly well it was easy, instructions were clear it just take a lot of push force sometimes! Best spice rack Ive purchased in many years. the edges are protected and it super thin. I have developed plantar facistis in my left heel and I am pain free when I wear these, which is the more important thing for me. I saw a review saying they are tight around your foot and I would agree with that. He doesnt use it much so he did not want to spend much on headphones. New and improved charging. Also as i mentioned in the title they dont have much arch support. It arrived with no instructions, half the bolts missing and one of the plastic sleeves wasnt there. You want a monitor like accuracy and balance.