Of the packs weve tested, this one (with its included load-adjuster straps at the top, to prevent the bags weight from sagging toward your lumbar region) is the best at distributing its weight (4.5 pounds when empty roughly 1.5 pounds more than most of our other picks, except the Peak Design pack)
Pros Super functional, with lots of pockets and features Zips all the way open, like a suitcase Cons Offers more function than style This backpack does it all: The main compartment has a full-zip opening (like a suitcase) to allow for easy packing with substantial capacity
Its 420D+210D nylon fabric is water and tear-resistant, and it features adjustable shoulder straps that help take the stress off your back and shoulders, and it has a separate compartment for hydration bladder storage and pipe access
What about sizes
Personally I have enjoyed the Etymotic ER4is ($90) and Precision Labs Challengers ($200), in the past, now I have the Westone CR1s ($270ish)