I bought this bag to hold my tent and sleeping bag on a motorcycle camping trip. If it failed, it would have been a disaster.

The first and last day on the road, it was dumping. We were in hard rain for several hours - not a drop got through the bag. My sleeping bag was dry when I got to camp. What else could you ask for? It takes longer to get into the bag than a zippered bag, but zippers aren't waterproof, and I think this is a fair trade.

The only improvement I would request is for some D rings or straps on the bag, so it would be easier to secure to the bike.

Good product for a good price.