The Mule 3L combines the storage and features of the classic MULE packs with a new and improved lumbar resevoir based design that offers more stability on technicaly terrain. The MULE bike pack is built around the iconic top-of-the-line 3-liter Crux resevoir with Quicklink that assists in delivering more water per sip. The flip down reservoir compartment also houses the tool roll and rain cover so any essentials are within easy reach! To keep you cool and comfortable the Air Director back panel and ventilated harness create a cool air flow to stop the uncomfort of wearing a backpack. The pack aslo includes a helmet carry to show off and secure your helmet.