Hydration pack is good for hiking or doing outdoors. It comes in different colors, mostly holds 2 liters of water or less depending on your needs.
I am Happy that my husband is starting to love hiking, I just wish that he will not get intimidated with the difficulty of our future hikes and that he will enjoy every hike we take. He is excited that I got a new "Hydration pack" that could carry 2 litters of water. I want red but he wants black so I compliment his request. I have reasons why I want red, in case we get lost we could easily be seen because of the bright color we're wearing. I wish I could get me a red next month.