AthletiPack TacticalThe AthletiPack Tactical (3L 5L) is the larger version (~3L to 5L) of the AthletiPack with a padded secret pocket on the back panel. How AthletiPack Works: by default, all packs include two interchangeable webbing webbing systems: Elastic and Non Elastic. It includes a removable hipbelt, regardless of the webbing option chosen. The Elastic is great for keeping the bag extra secure to the body, limiting bounce during high intensity movements like