We know that together with bag with valve we can use such tube packaging box in black color to contain coffee beans and this idea can be convenient for both customers and merchants. For those how have experience with coffee bean, they know that the best way of stockage is sealing them in a resealable foil bag, but it has one shortcoming – fragile and easy to be penetrated. Thus the good idea is combining the inner foil bag with an outer tube cardboard packaging box to strengthen the protection, meanwhile, tube box has a form and mechanic very convenient for customers in daily use. The reason we recommend the color black is that such color prevents light to penetrate, which will also be a factor of coffee bean degrading. The thickness of material can also be taken into consideration, but no need to worry about that as professional as we are we will always stay with you to customize the most suitable package for your needs.