You are a warrior: neither the cold, nor the wind, nor the snow stops you! Except perhaps the lid of your Nalgene which froze solid … The Insulating sleeve is an essential accessory for winter sports. Pro Tip: Put your bottle upside down and it will freeze by the bottom rather than by the lid.
Also fantastic in summer: freeze your nalgene in the freezer the day before. With the insulating case, your water will be frozen all day.








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