Here is another kit that lets you bring your body motion into VR environments. The StonX Full Body VR Tracker has 6 wireless tracking pucks (which you can upgrade to 8). It also has a dongle that connects everything to your PC. These pucks work with headset in SteamVR.
This full body tracker has over 20h battery life. The StonX CBT will have an open source UI. Each kit comes with 6 straps that are flexible and adjustable. More information can be found on Indiegogo.