I bought a camelbak yesterday, and I used it the first time today. They are popular with bikers. It is a small backpack with a water bladder, this connects to a tube that you put in your mouth, bite then suck. It is great, i can drink whenever i want, wherever I want, without even stopping my mower. No more walking all the way across a yard back to my truck. You can put ice in it, so that cool water feels great. Only problem, i pissed twice in 2 hours of using it. it cost $40, but i should have bought a larger model, mine holds 70 oz's, i could have bought a 100 oz model. it feels funny/silly at first, but it definetly helps.