Features Enter your model number to make sure this fits. Cotton Bullett-Point1 Description Product Description span class=key_feature_class_titleKEY FEATURES/span div class=key_feature_classAir Mesh suspended back panel and harness improves ventilation for comfort in hot environments Includes 2L Hydrapak reg Reservoir for easy on the go hydration Helmet carry system provides additional cargo options /div If youre looking for tons of storage in a compact bag look no further than the Dakine Session 12L Backpack The low profile design compliments the Air Mesh harness and back panel allowing for maximum airflow and thus maximum comfort in hot environments Since keeping hydrated is so important in those hot environments theres an included Hydrapak reg reservoir to make water breaks simple and the expanding compartment on the back provides additional storage for unneeded layers or a helmet if its that kind of adventure div class=specs_features_classspanSPECS/spanVolume (Liters) 12 /div