Attach it to the front of the Shell Backpack so it doesn’t take up space inside your bag. Designed to be an optimal size for all your toiletries and hygiene essentials. Easy full open access with double zipper and you can hang it up with the attached hook if needed. Includes a mesh zippered top compartment and open mesh compartment. Water and leak proof. Made from 64% Recycled Polyester. Height 16cm - Length 21cm - Width 5.2cm. Please note, this add-on is designed for use with the Shell backpack only.