This is the first Osprey pack Ive owned, and I am thoroughly impressed with the functionality, low-profile, and seamless incorporation of the E-1 airbag system
100% of DWR coated textile products will have treatments made without PFAS
When not used they almost lie flat on the pack, but you can adjust them to carry a multitude of items: a water flask (obviously) but also a sitting pad, outdoor sheath knife, crampons (in a protective pouch, for safety), hiking poles, a rolled hardshell, puffy jacket, and even a big 1.2L family-sized thermos
Its light, simple, and a great deal if you just need a backpack that can hold a days worth of clothing and gear and keep it from getting wetwe loaded it up with a laptop, change of winter clothes, shoes, a six-pack of beer, a spare jacket, a bottle of wine, and a helmet