Review on Stay Hydrated on Your Next Hike with SHARKMOUTH's 2.5L Hydration Backpack by James Townsend

USEFUL: A few weeks ago I went to Zion National Park and found that a 2.5-liter bladder held more than enough water to fill my 5-foot-9-inch, 135-pound Support body during multiple 5-7 hour hikes in sunny Utah weather. At the end of each day I had about 1 liter of water left and I was already well hydrated before hiking and using a backpack. Proper weight distribution also helped a lot with my back problems and made hiking with water a lot more comfortable. I've walked with a couple of bottles of water or heavy bottles slung over my shoulder many times in the past and I won't be going back. DESIGN: I wouldn't call this backpack small, but it is very compact. In practice, I found the insulated and middle pockets had more than enough room to fit a sandwich and other snacks, my DSLR with lens attached, a tightly rolled windbreaker, baseball cap, hat, purse, and sunglasses (all extra to a completely filled water bubble adder). As a precaution I kept all my sharp tools in the front pocket to avoid piercing the water bladder, like a knife/utility tool, as well as the rest of the essentials, like a first aid kit, headlamp, compass, fire starter, etc. The front one Chest strap has an emergency whistle built into the buckle, which I didn't notice at first, and it's definitely loud enough to alert someone in an emergency. The shoulder straps are also reversible, allowing you to route the hydration tube through any strap, and the tube clamp can also be moved to either side. I have looked at others here. It has plenty of storage space with 3 zipped compartments and the side pockets are great for an extra water bottle or other items. And if that says anything at all, I think the "Shark Mouth" marking on the packaging and the bladder itself looks pretty good, despite being less well known.