Most helpful thing since a lawnmower

Me and my wife have a daughter and she always hated cleaning bottles. So that was my job and I was fine with that, at first. But say she would use three possibly four bottles while I was at work, well she would leave them in the sink or on the sink with no water in them or anything. So by the time I got home and got time to clean and wash them out, everything was dried and stuck fast to the sides of the bottle, so it would take a lot longer to clean them. Then we saw these and I got excited, haha! The bottles have no bottom to them and are different from just regular bottles. You put the lining inside the bottle and it slides down til it catches a lip to stay on. Then you measure the water you need to put in. The bottle is marked just like any other bottle. You put in the formula, and then you shake it up to mix the formula up. Now the first thing is that it doesn't shake up as well so you have to shake it up longer and also, I sometimes will reach up through the bottom of the bottle and massage some of the clumps out with my fingers. Everything else is the exact same as the regular bottles. The measurements, the caps and nipples fit on just the same. I like them a lot. They are a little more pricy, but just a little bit. And the time and effort they save you are well worth it!!!