Size:57*26*17CM 
 Volume:35L
 Weight:0.66kg
 Fabric:Polyester 420D Double-line R/S PU
 Description:
 Integrated hydration system in main compartment to hold 3L water bladder
 Two side mesh pockets to keep bottles, umbrella,and snacks
 Sliding chest buckle with emergency whistle                                                                                                                                                                                                          Webbing loop for attaching trekking pole, ice axe                                                                                                                                                                                              
 Air mesh padded backside with high effective airflow
Facial bungee cord to keep helmet or wet clothes