The Thirsty Rock Hydration Tank Bag comes with a 2L bladder and a unique adjustable strap system that allows you to customize the fit to any sized bike or rider. The Thirsty Rock Hydration Tank Bag is lightweight, durable, and breathable, making it ideal for any riding or hiking adventure. It’s designed to keep your liquids cool and secure no matter how bumpy the ride. You can stay hydrated on any ride or hike with ease. The Thirsty Rock Hydration Tank Bag will keep you hydrated and comfortable, so you can focus on the trail or road ahead.