Theres really only one or two wild card characters that arent totally predictable. Very light and bottom is slightly flexible where when you walk the straps do not tug or dig into your skin = no blisters from wearing new shoesThe beads are applied where they flex according to the shape of your feet = no digging into skin. Instructions are very simple and took 10 mins (with an electric drill. They are perfectly fit and comfortable to wear as well! The bass is tight, punchy, and it has "true subwoofer performance". Good quality, nice grommets to enable hanging storage. Not a very well thought out hardware & firmware design from a D&I perspective. Very bright and easy to use and install. The upper is rather stiff and uncomfortable at first, but it softens up some after a few hours of wear (though it’s still not as comfortable as a cloth upper would be). Do they come in a bag, not a box? Yes.