The Foam Insert set for our Atlas Duffel is a two-piece custom foam set designed to securely store weapons and other sensitive items in the Atlas Duffel's basement compartment. It includes 1" and 3" pieces to provide cushioning at the bottom when inserts are cut. Simply fit the 1” foam layer into the duffel compartment, cut the 3” foam to fit your gear, then stack the 3” foam on top. We recommend using a hot knife, electric knife, or laser to cut the foam as cleanly and accurately as possible.