This is simply the best tank bag I've found. I've used the top, tablet pouch to use a GPS HUD to calibrate my speedo. I love that I can wire in my SAE battery tender pigtail to provide power for my toys. I really love that the bag doesn't rub my tank. I love this Black Cherry bike and having a bag that won't hurt my bike is outstanding.I haven't gone on a tour with it yet, just a 530 mile day, so I can't directly comment on the waterproofing, but the fact that there's a dry-bag in the main pocket AND a rain-fly to wrap the whole bag, I'm confident that the main bag contents will stay quite dry. This is just about a perfect touring bag!