Stay hydrated with the Source Tactical 3L Hydration Pack. Designed for flexibility, it can be worn like a regular backpack, inserted into larger packs, or directly attached to vests or backpacks via MOLLE using the QCA buckle system. With features like an external fill port and an integral refill handle, you never have to worry about spillage during fast refills on the move. Its closed-cell insulation helps maintain the water temperature, extending your hydration with cool water in demanding outdoor conditions.