Product Description Weight:about 3.3lb (1.5KG) Max load:400 lb Material:Nylon About How to Fill it Up : 1.There are 2 pocket to fill up the wind.When you are filling that,you should fill up one pocket firstly, and in the same time,close another pocket with your hand 2.After u finishd one pocket,and then hold this finished pocket to be closed with hand, go on filling up the rest one After u finished all,roll it up with the bar(the black one)towards inside more close,and then lock it on the opposite direction. 3.Our product had been checked by our QC,so no any problems with the quality. Smart as you are,my lovely customers.I wish you can try more times.Its easy when you get the points. 4.After u lie down and stands up.maybe it will get flat than before.So Don’t worry! Just go roll the bar up (towards inside)more close to the comfortable position,and then lock up.(towards on opposite position) You will only need the air about 60-70 % full on each side. After sides inflated then roll the flat bendable. rods up until the bag tightens to your liking or length. ( more air in each side of the start = longer , less air = smaller lounger after rolled) Warm Tips: 1.Keep in mind with the plastic liner when you first start to use this it’s going to take more effort to inflate the first time because you’re unsticking the plastic from itself. 2.Please dont make circles when you inflate it again wind, because the bag is so long that you will be easily tripped over by it. 3.Please don’t jump on it to ensure its long lifetime. 4.Please keep it away from fires, hard objects or any sharp things.