Art:

The OP was asking about a folding knife..how does a Maxpedition RolyPoly relate to a knife...or am I missing something here?!

Cold Steel Espada, Large (5.5" blade) or X-Large (7.5" blade)
http://www.coldsteel.com/espadaseries.html

Spyderco Police, 4.375" Blade
http://www.spyderco.com/catalog/details.php?product=358

These knives are awesome, but maybe out of your price range. The XL Espada is the knife to get if you have a taste for the ostentatious. It's a monster. View those Cold Steel videos to get a sense of how big a 7.5" blade folder really is. A blade of 4.5" on a folder is already pretty huge. I've handled these knives, but I don't own them because I have a policy of not paying more than $75 for a folder.

Well the cold steel spartan is more of a weapon then a tool. But it is one hand opening and has a four and a half inch blade.
Only costs around $50.

Do you have an intended use for it?

Cold steel Spartan (plastic over steel liners)and Ti-Lites both meet your requirements as does the Benchmade 13220, but the geometries are completely different. The Spatan's a chopper, the Ti-Lite's a dagger, and the 13220's a mild clip.

http://www.coldsteel.com/folding-knives.html
http://www.benchmade.com/products/13220

Spartan


Ti-Lite


13220

Yes, you are missing something.

I just bought a Benchmade LFK. Seems to be exactly what I need. It will probably arrive within the next two weeks. I'll let you know how it worked out. Thanks to all for your input (although I'm still mystified by the Maxpedition backpack).

I know the OP went with a Benchmade knife but I thought I'd put these out there in case others are looking as well. The Dozier knives from Kabar are a real bargen, tough, sharp and good quality steel . I found them online for considerably less than the MSRP.


Here are two models with 3.6" blades, one with a thumbstud and one with a hole, both are ambidextrous.


https://www.kabar.com/product/productDetail.do?productNumber=4070&mode=category&categoryId=1,2,3,7&categoryName=Hunting/Sporting

https://www.kabar.com/product/productDetail.do?productNumber=4071&mode=category&categoryId=1,2,3,7&categoryName=Hunting/Sporting


I have a 3" blade model that I Found for $19.00 at a local store.

https://www.kabar.com/product/productDetail.do?productNumber=4065

benchmade. I think its called the combat folder?

Are your thinking of the AFCK?
http://www.benchmade.com/products/806
It's got a 4" blade

The one he's getting is part of their Harley Davidson collection and sports a 5.2" blade and a retractable fin in the pommel
http://www.benchmade.com/products/13220

They're making the handle shorter than the blade. I wonder what the purpose of that is. The blade sticks out from the handle when closed anyway. So, I might as well have a handle that's longer to cover the blade. That retractable fin is yet another moving part on a folding knife. Is this knife gimmicky?