I bought this bag for a trip to Hawai'i and used it literally the entire trip. It was great for taking to the beach because of the waterproof features, useful pockets and durability. It was comfortable on a very long hike that we took up a mountain. It has enough room for lunch, a tablet, a rain shell, camera, and huge water bottle. The front pocket has really cool padded pockets that fit large smartphones, like my HTC One. Since arriving back from my trip I have used this bag exclusively for work where I carry a planner, folders, pens, phones, as well as gym clothes, shoes, deodorant (in side pocket), headphones, sunglasses, and keys. It's perfect! I have had the Synchro for four months now and have had no issues, as expected. It replaced another Quiksilver bag that I carried and abused for over 15 years! In fact, it too is still going strong.
Russ the cyclist