The Apidura Frame Pack Hydration Bladder (1.5L) is an effective solution for your drinking supplies if you don't have space for a drinking bottle on your frame. In addition, the hydration bladder holds 1.5 liters of water and comes with a 1.2 meter long drinking tube so you can easily quench your thirst while riding. The Frame Pack Hydration Bladder fits into all Apidura frame bags with similar masses, as well as many others, and can be easily filled and cleaned via the large roll-top opening. For more stability, the hydration bladder can be connected to compatible Apidura frame bags using the clip provided.