Hydration backpack backpack capacity 8 liter pack volume 2 litre applications running trekking trail running model 2015 material 230 d taffeta suitable for women men chest straps with chest strap adjustable hip belts with waist strap adjustable additional fastenings stick holder carry handle top back cushion mesh back back length 42 cm outside pockets chest pocket water bottle pocket internal pockets mobile phone pocket hydration bladder compartme