Mochila de Senderismo, Mochila de Senderismo Impermeable con Vejiga de Agua 3L y Cubierta de Lluvia,

A switch valve and a cover cap make double leak-proof. Big enough or a 3 liters hydration bladder. How to Hydrate Smoothly?. Also, this 3-Liter hydration bladder is Detachable and has Large opening, making it easy to fill water and add ice cubes.

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