Light Weight Design : Light weight, this cycling hydrations backpack is light weight and easy to carry, perfect for outdoor activities like cycling, hiking, and trekking. Breathable Back Panel : Designed with breathable materials on the back to overheating and ensures a comfortable wearing during long rides. and Practical: the convenience in outdoor hydrations with our water bladder backpack, designs to keep you refreshing and hydrated on outdoor. Water Resistant and Reflective Strips: Made with water resistant PU fabric and includes reflective strips and a tail light hook for improved visibility during night cycling. 10L Storage Space with 2L Water Bag : Features a main compartment with 10L capacity, accommodating the included 2L water bladder and other essential item for outdoor.