TIPS:The big backpack main capcity is about 45L,if includes the side pockets,will be about 50LProduct InformationsBRAND: FREE SOLDIERNAME:Tactical attack backpackCloth:Durable nylon fabricCAPACITY:30L(small),45L(large)SIZE:42*23*28CM(small)50*30*35CM(large)Features:1)MOLLE expanding function2)Optional paste VelcroSuited:Outdoor traveling,climbing,hiking etc(Manual measuring error 1-3CM) 1.The domestic top hualian buckle2.Metal D-type hanging buckle3.Both side also have to expand functionality4.Molle system can load multiple attached package5.FREE SOLDIER genine LOGO6.The MOLLE expand system7.Tightly woven nylon webbing8.Adjustment buckle ImportedNylonfabricThe packet imported oxford spinning fabrics, with super water-resistant function, high profeional water-resistant coating on the back,it will be a waterproof, do the real waterproof Diversion air carrying technologyOMNI-AIR AIR diversion bear technology, is a high-tech wear-resisting material is basic materials , combining the innovation sciense and technology out of manufacture all is carried system, he would be able to guarantee carry comfortable , under the premise of ensure maximum breathable wear-resisting efficacy, comprehensively promotes the use of high quality experience Loaded a plurality of attachment package , a bag in hand, travel worry-freeTips:In order to better display product, kettle bag, purse, velcro is beyond the scope of the sale