camelbacks are pretty solid water bottles. If I use my nalgene it just goes all over the place. Thinking about getting an insulated water bottle because with the heat in AZ during the summer ice water turns to jacuzzi water within the hour
I have a Camelbak that has the insulation layer inside. I can mow for two hours in the South Louisiana sun and still have cold Powerade. Got it at Dick's Sporting Goods, for $14 I think.