Fuel Pureformance Adjustable Plyometric Jump Box - Blue & Black for CrossFit, HIIT, and Home Gym Workouts

Loving this little unit so far. It's very solid, and the adjustability means you get 3 steps in one, which is a huge space spacer. It's quite sturdy, with the top very coarse and non-slip, and easily stands up to jumping or most anything you could throw at it in the gym. Assembly was simple enough and I got it done well under half an hour, but if that's not your thing, note the directions are a little sparse - do yourself a favor and get two ratcheting wrenches; it will make the whole thing a lot faster. (Also note that everything gets locked down with washers on either side except the top screws - those are flush to the board and don't require washers on the top part. That should help if you need it.) It took me forever to find this litte unit when searching for something like this, and I'm very glad I stumbled across it. I almost spent double for a similar product from another company, and this seems equal in quality to almost anything else out there.