查到国外的一个评测：
Getting ready for a three-year voyage home to Ithaca? You'll want to bring the Air Odyssey II by JanSport. (You have no idea how excited I am that I can finally get some mileage out of having read the Odyssey in college.)
I just received this backpack as a birthday present. Previously, I had been using an old Eagle Creek backpack. I wish they still made that model, because I'd love to review it and say how well it held up: I got it in middle school, so I used it through high school and college. It's traveled across the country with me, gone hiking and camping -- you name it. Finally, after almost 15 years, one of the zippers is having trouble staying closed. Plus, I've returned to school, and it started to dawn on me that that style of backpack is maybe not really suited to school (it's more of a camping-style heavy-duty pack).
A voyage through the Odyssey's features
I've provided detailed backpack specs at the end of the review, in case I leave anything out here!
Design: This is your basic large school backpack; there's nothing crazy about its design. It has padded waist flaps for extra support and one of those straps that clips across your chest. A nice feature is that you can tuck the waist straps into little pockets if they get in your way.
Compartments: JanSport characterizes the Air Odyssey II as both a campus backpack and a daypack, and it's pretty well-designed for either purpose. It has two large compartments for things like binders and books; one organizer compartment with spaces for pens and other small items, and a smaller front compartment.
Pockets: These are important to me: I detest having to root around through big compartments to find little things. The Odyssey II has a pocket at the top that's designed for hydration storage, but it works well for storing things you want to keep handy. There's a zip pocket on the front of the pack, and mesh water bottle pockets on each side. One particularly nice feature is a mesh pocket on one of the hip flaps; that's a very easy place to reach into with the pack still on.
There are also a bunch of places you can clip things to, including the daisy chain that you can see running down the front of the pack.
What can you fit in that Trojan Horse?
My university has a new building for the college of engineering, and they built it without any lockers! So I have to schlep around everything I need, all day. I need a pack that can hold school supplies, plus food, extra clothes for if it gets cold, closed-toe shoes to wear in the lab, etc. Right now my pack contains:
Main compartment I: two binders, a big textbook and a lab notebook
Main compartment II: extra sweatshirt, purse, lunch bag
Organizer: pens, pencils, erasers, my Olympus Digital Voice Recorder
Front pocket: tennis shoes, baseball cap
Hydration storage pocket: TI-89 Titanium graphing calculator
I have my phone and some sunscreen in the small front zip pocket, some kleenex (it's hay fever season!) in the waist strap pocket, and a water bottle on one side.
The pack looks pretty big with this much in it, but I could easily fit in another textbook and some more clothes.
The Siren Song of the AirLift
The thing that will probably catch your eye about many Jansport packs is the little tag with a sample of their AirLift material. This is sort of a honeycomb-patterned elastomer material found within the backpack in places like the shoulder straps. It's supposed to distribute weight better, and it's kind of cool to look at and feel (which I suppose is why JanSport provides a sample).
I thought it was great too, until I used this pack while wearing a tank top. The problem isn't the AirLift material really, it's the mesh they use to cover it: it's very rough and scratchy, and after I took off the pack the fronts of my shoulders looked crazy. Everywhere that bare skin was against the straps was bright red. I don't think I have particularly sensitive skin, so if you try this pack make sure you're wearing a tank top so you can check this feature for yourself. I guess either my shoulders will get used to it or I'll find some way to cover the straps.
Epic design, with a few faults
As I said before, the Odyssey II has everything you'll need for a campus pack. I have a couple of problems with it though. It's pretty tall, which was also an issue with my Eagle Creek pack. For typical campus use, you don't need it to be much taller than a binder, which is what, maybe 15 inches? Anything taller than that and you get into the issue of having to pull out the stuff on top before you can access the stuff below. What I'd like to see is a pack with the principle of a refrigerator, where there would be a separate pocket above or below the main one that could be opened separately.
The Odyssey actually caused me a slight problem by being so tall: the first day I used it, I went to pull out my bus pass and couldn't find it anywhere. I finally had to pay bus fare, figuring I had left the pass at home. But later when I had the organizer pocket completely unzipped, I saw the pass at the very bottom. The organizer pockets only go partway down, and I didn't realize I couldn't see the bottom of the pocket from above because I didn't expect it to be that deep. That's not any horrible flaw, of course, but the organizer design is a bit counterintuitive for me.
Oh, and on the height issue: the little spaces for pens are way taller than any pen I've ever used, so unless your pen has a clip on it it's going to slide to the bottom and you'll have to push it up. Maybe I'll just store three pairs of chopsticks in there and keep my pens somewhere else.
Also, if this is supposed to be a campus pack, why two water bottle pockets? It's not like you're going to not have access to water during the day. I'd love to have one of them be, say, a cell phone or mp3 player pocket. And I like the mesh pocket on the waist strap, but why is there only one of those? Why not put one on the other side too?
I find it easier to stay organized with a lot of small internal pockets, and I wish JanSport had put a few more in, instead of having just one compartment with organizer features. The existence of several small outer pockets helps a bit, but more pockets inside never hurts!
Ergonomics
I ran out of Odyssey jokes. I was thinking of trying to do something here with the iliac crest and The Iliad, but couldn't pull it off.
I haven't noticed a huge difference between this pack and the Eagle Creek as far as how aware I am of the weight I'm carrying. Both do a good job of distributing it comfortably. One nice thing about the JanSport is that it seems designed for a person with a smaller frame. I'm not particularly small (5' 7" and approximately [very approximately!] 125 lb), but the Eagle Creek's straps always seemed too far apart for my frame. And if I wanted to use the hip support I had to cinch it as small as it would go. With the JanSport, the straps fit better: they seem to be curved more for by body. At first I thought it might be specifically designed for women, but the fit is specified as unisex, so it may be that my Eagle Creek was a man's pack and I just never knew it.
I'm not sure I like the waist strap on the Odyssey, but maybe I'm just more used to my old pack. When I have the shoulder straps adjusted to where the pack is secure against my back, if I then strap the waist strap it seems too high to distribute some load onto my hips. Come to think of it, I think I do have a rather long torso, so maybe that causes some problems. I read another review on Amazon from someone who's 5' 9" and thought the pack was too small, so maybe I'm running into the same issue.
Price, Availability and Warranty
This pack generally sells for about $100, which is pretty much going price for a good backpack. It's widely available online, and will probably become even more so as JanSport replaces the older Odyssey model. That one can be found for as low as $50 online.
If you're looking at an Odyssey backpack online, it's not always clear if it's the Odyssey or the Air Odyssey II. Right now, for example, rei.com is selling the Air Odyssey II, but the page title just says "JanSport Odyssey." The packs look very similar, but I believe the way to tell the difference is that the original has either no mark, or a number 38 on the lower front of the pack, while the II has a number 39. Honestly, if I were shopping for this pack I'd probably try to get one of the closeout older models. The features appear identical, and it's not as if they've made some breakthrough in backpack design in the last two years!
JanSport has a "lifetime" warranty, which is really for the intended lifetime of the product. I wonder how long that is. Their website says, "Our warranty applies when the product is used for the purpose intended, under normal conditions, and does not apply to damages caused by typical wear and tear over time, unreasonable use, accidents or neglect." You'd have to pay to ship an item to them under the warranty, but they'll ship it back to you for free, unlike some places. (I always check this now after my absurd experience with my Nextar MA570 mp3 player.)
Overall
The Odyssey II is well-designed pack that could be used for school, traveling or hiking. It's very roomy, with a ton of storage options. I have a few quibbles with the design, but they're pretty minor. If you're a student who needs to carry around a lot of stuff, this would be a great pack. I intend to travel with it, too, since I could probably go out of town for a few days and not need any additional luggage. The two water bottle holders plus the hydration option would make it great for hiking.
P.S. This has nothing to do with the backpack, but when I ran this through Microsoft Word to check spelling and grammar it suggested I change "it's pretty well-designed" into "it are pretty well-designed." Seriously, Microsoft? That are ridiculous!
Product Details
From the JanSport website:
AirLift™ shoulder straps
Two large main compartments for versatile storage
Deluxe utility pocket with organizer keeps essentials handy
Internal framesheet
Easy access V-loft pocket
Side compression straps keep pack close to the body and manage the load
Reservoir ready hydration sleeve
Padded tuck-away hip belt for stability is equipped with stash pockets
Dual water bottle pockets
Daisy chain quick-clip points
Breathable mesh back panel stays dry and comfortable
Hypalon grab handle
Carbon fiber framesheet
Specs
Fit: Unisex
Frame type: Internal
Approximate volume: 2,350 cubic inches (38.5 liters)
Average weight 3 lbs. 8 oz. (1.5 kg)
Adjustable torso: No
Dimensions: 19.5 x 13.5 x 12 inches
Material: 420 Denier Nylon / 210 Denier Diamond Dobby
Number of pockets: 5 2 main compartments
Hydration compatible: Yes
Access / Loading: Panel
