The thru bolt that tightens the bike rack to the trailer hitch is weak , the bolt is steel, but the components inside the draw bar of the bike rack are aluminum and these will fail. As time went on using this mouse it became more and more evident that the left side is actually slightly convex under the thumb buttons and the grip width is on the wider side ? significantly wider than the G403. If your child was wide feet, these shoe are for her. Still use this and they are fantastic doesnt hurt the ears when you smile or laugh but long term it can become uncomfortable. The two major downsides Ive found to these is the audio lag, which ranges from 0. the quality of the product and sound is great. A nice comfortable shoe, but it lasted less than a year and a half before needing to be replaced. The other is the size chart might be a bit off, or im fatter than I thought. I?m happy with my purchase and would recommend it to anyone looking to trainer their waist. They grip in the water and on rocks similar to the Keens I?ve had, as much as I would expect from the type of rubber outsole they are built with.