Instruction: Extract information from the supporting document to answer the given question.

Input:
Question: Has anyone tried it with a 17" laptop?
Document: I was not expecting too much from the harness but was tired of trying to carry my laptop while doing wifi surveys. I have a 17&#34; laptop and the ends of the laptop hung over the base of the harness, but once it was adjusted correctly it held the laptop. It did take some time to get used to the harness and not feel like the laptop was going to slip out.
I have a wee 3-lb, 13" Lenovo IdeaPad, and it is slightly larger than this desk. It's held perfectly, but I haven't tried it with any of my family members' considerably bigger and heavier computers. I would imagine that they'd be more unwieldy and start getting painful a lot more quickly.And that's the other thing...after a while, you really wish there were a way to remove the pressure from the front shoulder straps.
This thing is not comfortable at all. I rather carry my laptop then use this harness.Over priced. . . .
This is a very good tool to keep the laptop safe and secure whenever there isn't a stable or clean surface available.
This is what I think the product needs to come with.One side note, this is sized perfectly for my older laptop, but modern widescreen laptops would push against the side straps.
I use this a lot when walking between my desk and meetings (or even when walking between buildings). This makes computing on-the-go a lot easier (frees up the hand that I would normally use to hold the laptop).The strap on the front keeps the laptop from falling over the edge.
For the price of this product, the quality should have been much better. That being said, it has held up and really makes life easier. I'm a wireless network engineer and doing survey work means walking around with a laptop for 12+ hours a day. That can get pretty brutal and this takes the pain out of the process.
Only problem with this design is it is not wide enough to have a laptop and a mouse. I added a piece of 1/4&#34; plywood, secured with large rubber bands to extend the platform to allow a mouse surface. I am using it to do field work on Revit and that software  needs a mouse to work effectively. The geek-harnass as I call it, is make well and is perfect for what I am doing. Again, I just wish it was wider.
My neck is sore from looking down and I can feel it in my shoulders. My Dell laptop has mouse buttons on the edge and my body accidentally pushes them occasionally as I move, leading to unwanted mouse movement and clicks. My laptop fills the entire board. I often use an external hard drive and it does not fit anywhere on the device. It is awkward to put on and take off but it can be done.I have kept it and make use of it.
I purchased this hoping to become more mobile with my laptop. It is okay. I am wearing it while I write this review.Pros: Yes, I can attach the straps and carry around my laptop. The board is not plastic as stated in another review. The cushioning is attached to the board with velcro in each corner.Problems: The straps become uncomfortable after a while. The laptop is held a little too close to my body. Let's just say it is not designed for humans with breasts.
Answer: I have a 17.3" and it works fine, you just have have adjust the straps a bit differently than on a 15" which I also use.