WASING Hydration Pack with 3L Bladder and 2 Additional Pockets. Tough Military Style Backpack Is Perfect for Hiking, Biking, Running, Walking and More. (Tan) 3L HYDRATION WATER BLADDER INCLUDED. No need to add one as other bags require you to buy separately. 2 FRONT POCKETS. Use the pockets to carry your wallet, keys, phone, towel, small tools or other items QUIET ZIPPER PARACORD PULLS.Adjustable chest and shoulder wide straps, thickening and soften back design. Net for holding the helmet. LARGE CAPACITY-20L: Size: L9 * H 20* W 6 IN, enough space for 15" laptop. Carry more things when you hike or ride. AIRFLOW SYSTEM DESIGN, Keep your back cool and dry. Perfect for hiking, running, biking, walking or taking with you for the day.