Lightest Insulated Water Bottle: Hydro Flask Launches Titanium 'Ultralight' Trail Series

Coffee-loving hikers take note: Hydro Flask has the 'lightest weight vacuum-insulated bottle currently on the market.'

The Hydro Flask 21 oz. Standard Mouth Insulated Water Bottle will keep your water or beverage ice cold for up to 24 hours, or hot for up to 12 hours.

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