Ergon. I had no idea who they were until i noticed Weins is sponsored by them. I'm a big Weins fan, he's just a super cool old school mountain biker, period. I'm glad I Google'd Ergon as I'm of the opinion they have leapt forward 5 years with their grips and packs. They're German, and the stuff is definitely engineered to the hilt. I've only been riding with the pack for two months, and the grips for less than a week, so we'll see how they hold up over time but I can tell you they are worth the extra cash when you compare them to any other pack or grip out there.
I bought their largest pack - the BC3 for commuting and touring.
http://www.ergon-bike.com/us/en/product/bc3It has an external/internal frame made of lightweight and relatively
pliable plastic. The shoulder straps are attached to the frame but they rotate
independently of the hip belt portion of the frame. Hard to explain unless you pick one up. What it means is that all the weight of the pack is placed on your hips and you hardly notice anything is on your back. Because the shoulder straps function as one unit and rotate separately from the
hipbelt, you don't fling the pack when your shoulders move like when you are navigating technical terrain or just plain steering. Because of the design, there's an airspace on the back panel too, so your back doesn't get as wet ans clammy as with normal packs. The big exception is some
Airvent Deuter packs which this
Ergon pack is somewhat replacing for me. The
airvent breathes better but carries all the weight on your shoulders and back. I'm not sure I'll get rid of the
Deuter pack, it's been with me longer than any pack at around 8 years!
The Bc3 is waterproof, truly waterproof, and the zippers are waterproof too. It's a bomber (a bit heavy) material that I doubt will ever rip unless I run into barbed wire at 30mph or a mountain lion takes a swipe at it. It has multiple chambers for stashing things, and a weird rigid insert to the main compartment that I took out, but it has a place for keys, a pump, other random small items that tend to bounce around in bigger pockets. There is a helmet compartment on the outside that also functions as an easy access jacket/bootie/glove/grub pocket and cinches down nicely.
This pack is big at 25L/1525 cubic inches, but it doesn't SEEM that big maybe because it can cinch down well and is made of a somewhat more rigid fabric than other packs. It's perfect for someone like me that always brings way too much along on the ride, commute, or tour because you can barely feel the extra weight. The hipbelt is graciously padded and does the job better than any other bike pack - WAY better. The pack has a large and small sizing built in - so if you have a longer torso than others you go with the large setting and if you are too skinny you go with the small hipbelt setting. There's really no comparison to this pack, it's in its own league (but so is the price).
There are a couple of downsides to this design. One is that it sticks out farther off your back than most packs which I don't really notice but some might. The main issue I have with the pack is that it's not as good a technical/rough trail pack as I thought it'd be. It stays in place OK, but it still slips to one side or another depending on which foot you have forward on your pedals while navigating and pedaling over stuff. Because the shoulder straps rotate independently, it's harder to fling it back into place than with regular packs. You have to use your hand to slide the hipbelt back around your waist every once and awhile. It's truly at home on the commute and I can imagine on a long bike tour where it's not super technical. I'll get to test it out on the way to Durango for SSWC's this September for that purpose.
In the end, it's the best pack for someone who wants to carry a lot of stuff, or just distribute the weight of a water bladder better than other packs. It's great for someone who gets back pains on long rides, or who has a back back. It may transfer your pain to butt-pain but I'm not sure yet. It's amazingly well (over?) built so should last over the years. They make two smaller sizes to this one and I've heard great reviews of the smallest version, the
BD1. Oh, and they make women's specific sizes!