Instruction: Answer the given question by extracting information from the supporting document.

Input:
Question: does this work on shag carpets?  Is it height adjustable?
Document: I love my vacuum! It's light weight, cleans good, and the handle is adjustable to height so my kids love vacuuming their bedroom! !
When the suction began to decrease, we just replace the filter and it comes right back to where it was when it was new. The tools are acceptable for our needs. The only actual complaint I would have are that it doesn't have adjustable height, so it isn't very effective on hard flooring.
This vacuum works great! It gets everything up on both the carpet and the tiles. My only complaints are that I wish the detachable tube was longer because it's hard to reach stuff when it's short and attached to a big vacuum. Lastly, the vacuum is kind of hard to push through the carpet. I have thick, long carpet, though. It doesn't bother me, but I could see an elderly person having trouble pushing it. I wish there was an adjustable height for the distance from the ground.
This is a powerful little vacuum. It is a value for the price. The only drawback is that since you cannot adjust the height it is hard to push on high carpets.
I bought this because my daughter had one & recommended it. She used hers to clean houses with so I figured if it could make it through that it would do me fine. Easy to use, light weight & it comes with tools. It does not have a height adjustment for carpets but that hasn't been a problem for me and I use it on bare floors and 2 different heights of carpet. Also easy to empty & clean filter.
The Dirt Devil Dynamite Bagless Upright surpassed expectations. In the past I've owned expensive vacuums such as theDyson DC25 Animal Ball-Technology Upright Vacuum Cleaner; however, none of them performed as well or lasted as long as this one.Although this vacuum works well with low-level carpets, I wouldn't recommend it for thick carpets and hardwood floors. Hardwood floors make the vacuum prone to scattering debris; thick carpets choke the vacuum. Perhaps these limitations are due to a lack of carpet height adjustments.
It works well on hardwood floors. We got new carpet and it's very very hard to push. There is no adjustment for carpet height but i knew that when i bought it. But this is a nice little vacuum. The accessory tools work very well with great suction. The brush attachment got lots of dog hair off the furniture. I like how the handle is telescoping so it stores well in a closet.
I purchased this then returned it. There are 2 things you must know before you buy it. First, the height cannot be adjusted. It is some type of auto-height adjustment. It did not work well at all for my carpet which has a medium pile. I am 6-2 and of average strength and had a VERY difficult time pushing this thing because it was too close to the carpet. If you have a low pile carpet, it will probably be fine.
Great vacuum for a small room or apartment. It'd probably work in a small house too, but you'd have to empty it pretty oftenWorked great in my apartment. Good suction on carpets and floors.
I am very happy with my Dirt Devil. It works great, suction is awesome, and it stores wonderfully. We live in a very sandy area, so vacumming our carpets everyday is a must. This pulls any sand out of the carpet. The tools work great, except they dont lock. So if you over extend the attachment it pops right off the hose. I love how the arm goes down so that you can fit it into a small closet.
Answer: Not adjustable.  Just one setting and I would say pass.  I have standard apartment carpet and it is mind blowing great.