Osprey 4-season Insulation Kit

This insulation set helps keep your drinks warm or cool - in addition, in summer use, you can slip ice cubes inside the hydration bag. This is an insulation set for drink bags that can be purchased separately - the bag itself is not included in the price. Closed-cell foam as insulating material A reflective coating helps bounce heat energy back Detachable drinking head cover Dedicated insulating tube for the hose Fasteners