The Luxe Satin Smell Proof Backpack from Cookies SF features smell proof technology to mask smells inside with an all over printed logo design, multiple zippered pockets, satin details, side pockets and double zippers. Cookies is now using new technology to bind the smell proof material to the bag to make it more smell proof. They also have new double zippers with each zipper having reverse direction with a stopper at the end for better trapping of the smell.