Hello everyone,
I've been asked many times, if I know what brand House's beloved blue backpack is, that he's been carrying around since the beginning of season 2, if I remember correctly off the top of my head...

I've never been able to definitely tell what that little logo said or find that exact pack anywhere online....
BUT...
Eddie Grisco (
eddieprops), who is a prop master on House, tweeted in response to a question about the bag:
"house 's backpack is a yak pak out of Brooklyn ny"
Yak Pak website
I haven't checked that the backpack has always been the exact same, and I haven't confirmed that it's a YakPak, either. I'm just going to take Eddie's word for it, because he's the person who'd know best. :-)
If anyone stumbles on the info which model it is (note the rounded zipper), I'll happily include it in this post, giving credit, of course.