seamand Hydration Backpack with 3L Water Bladder for Hiking and Climbing 90 days free replacement if defective,Don't need to return.anything please feel free to contact with us.3.0L HYDRATION WATER BLADDER INCLUDED: No more plastic bottles to take up space HIGH QUALITY MATERIAL: tough and water resistant high-density 600D polyester fabric ,construction rope, high quality buckle 2 FRONT POCKETS and 1 MAIN POCKETS: Use the front pockets to carry your wallet, keys, phone, towel, small tools or other items; the main pocket can organise your other large stuff well PERFECT FOR HIKING, RUNNING, BIKING, WALKING OR TAKING WITH YOU FOR THE DAY LARGE CAPACITY-15L: Size: 45X25X10cm,Enough space to hold your necessities for travelling