Bests & Worsts Reviews from Amazon

Update after a few weeks of use: I still love this pack! I have my transit pass tucked into one of the cup holders so I can easily reach it when I get on the train/bus. ALSO, I've added a picture of some rain that sat on the fabric, and hasn't absorbed after a 30 min train ride. I am in love with this backpack and it just arrived today. I've returned a couple backpacks to Amazon in my search for the right one, and this is probably the One. It's very sturdy, with great back padding and a deep air flow channel, along with mesh backed straps to allow for air flow around your shoulders. The straps are comfortable when wearing the pack, and the seams are flexible and don't cut into my arms. The Heather Gray fabric is the same water resistant material you find on good quality backpacks, though it looks like cotton canvas in the pics. All pockets have large capacity. The top front pocket is roomy and about 7-8" deep. The side pockets behind the water bottle mesh are a whole 12" deep, and could probably fit a dress shoe on each side, for commuters or travelers (maybe this is why there are 2 grommet holes on each?) The inner pocket is surprisingly wide, at 5-6"at the base, and you could stuff much more in there, since the front of the pack is flexible. There are 2 dividers inside, to organize papers or folders. The handle has a solid molded core, covered in the fabric and grip handle. The zippers are smooth, and it's easy to open the scansmart lay flat pocket. This pic shows a 15" laptop on the large pocket, a 10" asus tablet and a kindle paper white in the tablet pocket. There is plenty of room for a larger laptop. The laptop pocket also has a padded arm that secures with Velcro, and holds the laptop steady, and the pocket also has good padding at the base, fot when it's set on the floor. I'm can say that I like every feature about this backpack so far. My ONLY complaint is that it should come with a user guide to explain all of the features. There is a sunglasses loop. The mesh water bottle pockets are elastic at the top, and have adjustable straps around them. There's a carabiner on the front (behind the Swiss gear tag in the pic) What are the little loops with up/down arrows at the top of each strap for??