This was so easy to use. Our doors are over 100 lbs and this made the process so much easier. If you need to hang a door these are a must!!Have used these now on several new door installations. Sure makes the installation go smoothly in getting the door to install evenly in frame.Works as described. I like them. great for lifting items.I really like the concept, but when I saw how small it was i realized that it is to small for what I wanted to use it for.This is a handy little tool, and well worth the cost. After purchasing my first Winbag, I promptly ordered a second. I use it for it’s marketed purpose - as an inflatable shim, but I was turned on to it while searching for the tow truck equivalent for vehicle lockouts. I have not used it for that. It’s not advertised as such.Right away, I went off to level my new washer. The Winbag acted as a jack on one side while I adjusted the legs. Last week, I had to cut down or adjust two doors that began dragging on the floor. We’ve all balanced a door on the tip of our shoe or something while rehanging it. Two Winbags under the door allowed me to very easily get the door into perfect position and install the hinges.Today, I found its use for cleaning and furniture refinishing. I used a Winbag to jack up the side of a heavy antique dresser so I could get the legs off the carpet to detail clean them. Then while applying a new shellac coat to an old dining room hutch, I used a Winbag to jack up one side off the carpet to apply the finish to the very bottom. Just now, it lifted one side of my very heavy oak dining room table.This is indispensable for the DIYer/handyman/homeowner. For $15, it pays to have one or two of these in your toolbox for that time you need a second hand to lift, tilt, hold, etc. and who knows - maybe some day I’ll need it to get into a car!Like a mortar and pestle it won’t be something you need everyday but when you do need it this is the product to get it done. It works and works well. Cost effective and worth having on hand.It lifted a full 4 drawer file cabinet.Works great durability is good and fit into thinner places then my airshims not quite as much pumping power but a good product I like them better then my airshimsExcellent produit je le recommandeI ordered four of them but one is constently leaking air but beside that it is very usefull around the house.The most handiest items for any do-it yourselfer, contractor or just when you need an extra hand. I really dont know how I managed before.Versatilidad al 100%, muy practico y muy útil, mucho mas cuando trabajas solo.