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Customers most agreed on the following attributes:
from LI, NY on 2/20/2008
This thing does not work. Filled my Camelbak with hot water, the tube still froze. had to abandon the hike halfway up the mountain in ADK state park. Terrible. maybe it will keep my water cold in the summer; i guess i have to wait a few months for further disappointment.
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from Lancaster Pa on 3/14/2007
I think the thermal tube helped for awhile on the climb, but in the end it froze before sumiting Mt Kilimanjaro.The valve leaked after it had frozen and thawed.
from Slingerlands, Ny on 2/23/2007
In 20 degree F and below the tube still froze up towards day end in the Adirondack High Peaks. You have to be sure to blow the water back into camel bag after each drink & drink frequently to keep the line from frezing in low tempertures. In warm winter wealth it worked fine and I was happy to haave it.
from New Hampshire on 2/9/2007
Really good at maintaining temperature. It slows the ice up a whole lot. Lasted about 2 hours in -10F temperatures without drinking before the ice started. The only downside is that its too good. It took like half an hour for the ice in the tube to go away, even in the base lodge! A very worth while investment.
from Boulder, CO on 2/5/2007
Recent cold weather spurned on need for camelback tube to not freeze. This product only slowed the progress of ice on the drinking tube. When used in 2º F weather it still almost froze. Best defense to keep tube from freezing over is to, still, drink often.
from Niskayuna, NY on 1/17/2007
Hydration is too important to leave to chance when heading into the highpeaks of the Adirondacks -- the tube and bite valve on my Nalgene freeze solid... not good. I popped this insulated replacement tube with flip cap onto an old Camelback bladder from my MULE and put it to the test last week on an overnighter -- it worked perfectly and never froze up. The true test remains when the temps drop below 0 -- then we'll see if my review needs an amendment.
from NY on 1/2/2007
when used properly, this product shines! never have a frozen bite valve again.
from Boulder, Co on 12/27/2006
Barely delays the onset of tube or bite valve ice-up.
If outside temp is below freezing, still must drink every few minutes to keep ice from forming... if you forget for 10 minutes, it's frozen up.