Review on SHARKMOUTH FLYHIKER Hydration Backpack: Lightweight and Comfortable for Short Day Hikes, Day Trips, and Trails - Includes 2.5L BPA Free Water Bladder by Brandon Hilton

I've recently used this camelback while climbing Machu Picchu and other mountains in Peru. It holds a lot of water, is lightweight and offers enough space for keys, a bulky cell phone, tissues, a light shirt, papers, etc. The best thing about this product is that you can clean it properly because the bubble mouth is wide enough to reach into . The water pipe has a cap, which I also like. You can also throw some ice in it to keep the water cold for a long time. My water was cold enough after 6 hours of hiking and climbing. I'm not sure about the durability, hence 4 stars. This is a new product and it hasn't given up on me yet. Doesn't flow yet. I may update the review again if there are any issues with it. I highly recommend it.