What would you do if you have no trees to tie on your hammock? What would you do when you could not install your beloved hammock indoor? Why not try a portable zero gravity hammock? It is so easy to set and you could set it up only in a matter of seconds. You even could adjust to an upright or recline the position. Even more, the hammock is flip proof, so you could use it as a spare bed as far as your weigh under its weight limit, 250 lbs. If you could not sleep without music, the hammock has a MP3 slot. The weight is 39 lbs and very portable with a carrying case.