Using this women's hydration vest is easy. First, fill the hydration bladder with water and insert it into the designated compartment. Adjust the straps on the shoulders and waist to get a snug fit. The 12 - liter storage can hold items like snacks, a small first - aid kit, and extra clothing. When using on the trail, make sure to secure all zippers to prevent items from falling out. After each use, empty the hydration bladder and let it dry to avoid mold. Wash the vest gently by hand or on a delicate cycle in the washing machine. Air - dry it completely before storing it. Don't over - stuff the storage compartments as it may affect the vest's balance and your comfort.