Adding this option to your order means that we will double layer the bottom fabric on whichever pack that you order. This effectively doubles the life and abrasion resistance of the bottom of the backpack which is one of the spots on the pack that can wear out most easily.
VX42 adds about 1oz, and VX21 adds about .7oz to overall pack weight. 150D DCF adds about .7oz.
*Important Note - After a custom order has been placed, it can not be changed. If you would like to change your order it will need to be canceled and reordered which will reset your place in the lead time. If you have any questions shoot us an email at firstname.lastname@example.org.