You said Osprey ius style over function. I asked where it isn't functional and you respond that you don't like its style, it isn't green.and some snobby comment. Like I said - no substance.

How many years?

My Arc'teryx has been used for every single commute since 2010, plus a lot of non-commute travel. So it's been through roughly 2000 bike commutes without a single strap/buckle/etc... failure. Nice lightweight aluminum back-curving plate.

Black, which is excellent so it doesn't look dirty, it is getting worn though, the fabric.

The material around the front zipper just tore ... but that's after 8000 zips minimum (minimum of 4 per day ... pre-work home, pre-work office, post-work office and post-work home).

Thus, I need to get the zipper replaced.

The roll-top is excellent and 20L is perfect for a lunch/clothes change/weekend trip.

Osprey ... hahahaha ... I wouldn't waste the money.

If I needed the convenience of a backpack throughout the day (such as college student) but commuted by bike, I'd be looking for one of the following:

• Panniers that are large enough to hold a backpack.
• Panniers that can BE a backpack.

Preferably the latter, since leaving panniers on the bike while it's parked during the day might encourage a theft of the panniers.

I have Ortlieb Shopper panniers (a set of two) for my aluminum road bike and find them great for commuting on those occasions when I'm able to commute, which is about once a week. They are easy to remove and carry around, but are not suitable replacements for a campus backpack.

I suggest going to the Oritlieb website and looking at whatever pannier seems to be most appropriate for carrying the type of stuff you commute with, and then purchasing the backpack adapter for that pannier:
Ortlieb Backpack Pannier Carrying-System

The reason I prefer a pannier on the bike over a backpack is sweat, ride comfort, and balance. I feel better balanced with a pannier on the side than a pack on my back. And am able usually to arrive without a soaked back, when I use a pannier. The Ortlieb backpack adapter seems like a cool way to take your pannier with you when you leave your bike at the rack. ...matter of fact, I may have to order one.

Those Ortlieb are super-uncomfortable to use as a backpack, especially when they're the older variant with an inflexible rear facia.

I use a Timbuk2 backpack. I like it, but it's really floppy, which is both good and bad. It's good because it's very lightweight. It's bad because it makes filling the back a little cumbersome. Overall, I'm very happy with it. I understand some of the newer models have a kickstand, which sounds funny, but now I see the point.

I prefer Osprey Radial 26 to Osprey Radial 34. Although the rope does not seem to be fully carrying the weight of this bag, this is a fact. Like everyone else, I don't worry about it, their warranty service is very good.

I love Osprey packs for hiking and mtbing...
I tried the Radial 34 for commuting, the S/M. And still my back of head/helmet would run into the pack. I'm still looking for a good alternative.

No problem with the 26. 34 is quite big for commuting IMO.

I got a North Face bag since the back of it has bumps to keep it off my back some making it less sweaty

yes like timbuk2 too but now that I have racks I don't use it much. hate having a pack on my back while riding.

Four semesters and one summer break later…