Features:Made of High quality Fabric material, the insulated hydration compartment fits up to 3L bladders.The interlayer is designed to fix the bladder solidly so that it won't bounce during movement.Heavy-duty construction with 600D oxford cloth and PVC lining, resistant to tears and abrasion.Weights so lightly, this packbag adds no heavy burden to your travel load. Adjustable shoulder, chest and waist straps ensure a stable and suitable carry.------------------------------------------------------------Specifications:Type: bag.Size: 21*10*10cm.Capacity: 3L.Color: as pictures show.Material: 600d oxford cloth.------------------------------------------------------------Package List:1*Bag------------------------------------------------------------Notes:There might be a bit color distortions due to different computers resolutions.There might be slight errors due to different hand measurements.