Outer material: 500 denier cordura nylon oxford
(the surface: water repellent treatment)
(the back: Polyurethane coating)
Inside pockets: 420 denier nylon oxford (Polyurethane coating)
This is mainly a series of messenger bags with big flaps as its design accent. This uses fine nylon (500 denier) so it is very durable. The depth of the bag changes by adjusting the straps on the flap, so you can change it according to the volume of your belongings, and also would not take too much space at crowded areas.