The Osprey Hydraulics LT 2.5 L hydration system reservoir fits easily into hiking backpacks to provide you with an easily accessible source of drinking water. It is made for light and fast activities where weight and balance are critical. Twin-welded chevron baffles stabilize the water and maintain a flat profile. The streamlined design allows for easy loading into internal hydration sleeves. Thoughtful design makes filling, cleaning and most importantly staying hydrated on the trail easier than ever. It is perfect for those looking for a lightweight, hands-free hydration option. Furthermore, all parts are BPA-free, phthalate-free and lead-free.