HEAD Lightweight Hydration Backpack with Reservoir - 2 L | Hydration Bladder with Straw | BPA Free Leakproof Hydration Bag for Bikers | Hydration Vest for Running, Traveling, Hiking, Cycling | Black Spacious & Convenient : 2L capacity, lightweight polyester, adjustable straps, and extra pockets make hydration easy during all your adventures. Comfort & Hygiene : Leakproof with a wide mouth for filling and an anti-bacterial TPU pipe for safe sipping outdoors. Versatile for All : Ideal for hiking, cycling, camping, and fitness; breathable fabric ensures comfort on the go. Family-Friendly : Designed for all ages, keeping families hydrated on trails or daily commutes effortlessly. Durable & Safe : BPA-free materials ensure a long-lasting pack, providing safety and peace of mind during adventures. Custom Fit : Adjustable straps deliver a snug, secure fit for everyone, enhancing your comfort. Mess-Free Hydration : Innovative leakproof design ensures hassle-free sipping with zero mess!