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The form-fitting VestPac(TM) WilsonPac(TM) is a great alternative to bulky backpacks and awkward waist packs. It combines three ample chest pockets with a hands-free hydration system.The WilsonPac's two cinch-flap pockets and large stretchy zippered pocket offer the most storage of any VestPac chest pack. Great for extended outings.Designed to be the most low-profile, breathable & comfortable hydration/accessory pack on the market.Form-fitting athletic design makes this chest pack perfect for active outdoor sports such as paddling, running, cycling, hiking and fishing.A comfortable and convenient way to carry your electronic devices, wallet, keys, snacks, fishing tackle and other items.You can even wear it under a jacket, life jacket or backpack! Revolutionary 3-D Airmesh adapts to any climate, keeping you cool in the summer and warm in the winter.The hands-free 1-liter hydration system lets you quench your thirst without interrupting the action.Four heavy-duty adjustable straps ensure a perfect fit for all sizes.