Always looked tiny to me. I have to be able to get a jacket w/pads in each side, less is not very useful.
I love the K-drives, but they are money. I went with Large Saddleman Drifter bags. So far, they have made it through three seasons. If they go, I'll probably get the Jumbo size next time around. Tough to beat for less than $150. Plus the Saddleman buckles are the only ones I've seen that you can put on a little padlock.
