Check the listing for details. Stiffener Board and Foam Pad for ACU 3 Day Assault Pack - New. Color: Foam Pad and Stiffener Board. Listed at 22.78 USD. Stiffener Board and Foam Pad for ACU 3 Day Assault Pack - New This product offers the only solution to an uncomfortable experience with the military grade ACU 3 Day Assault Pack. Move comfortably with the Foam Pad and Back Stiffener, developed for a perfect fit in an ACU 3 Day Assault Pack, ensuring the most ergonomic wear possible. Simply place this product on the inside rear pocket panel of the pack and notice immediate relief. The Stiffener Board is made of a hardened white plastic. The Black Comfort Pad is made of a lightweight foam. Both are cut to the same dimensions. Features: Creates a slightly flexible but uniform contour to the wearers back The most ergonomic solution to a cumbersome ACU 3 Day Assault Pack Lightweight and thin material does not sacrifice the pack's carry capacity. Bag NOT included! Pictures are representation of available products. FREE SHIPPING ON ALL ORDERS TO THE LOWER 48 STATES. International Customers: Send us a message with your Country and shipping postal code for calculated shipping costs AMMO CAN MAN® "Making American Products Great Again®"