Great pack overall and holds more than I expected. Purchased it for day hikes but broke it in at Universal Studios. Was able to carry sweatshirts and foldable jackets for (2) adults and (2) kids along with a bunch of snacks for the day. We did use the built-in rain cover on a water ride and it worked perfectly. Even when fully loaded, it was very comfortable riding on the hips and felt weightless. The vented back was also helpful in avoiding the inevitable "back sweat" you can get in warmer weather. My only compliant is that the shoulder pouch on the strap is useless and would be better not having anything there at all. It was designed for a smart phone but definitely not any of the larger smart phones currently on the market. Perhaps if this was a stretchy fabric it would have been more useful.