The Mercury and Onyx feature Black Diamond's new, innovative ergoACTIV XP suspension, which uses a 3D ball joint and urethane elastomers in the waistbelt to achieve the ultimate balance of mobility, stability and dynamic load transfer. It also includes the new highly flexible SwingArm™ Shoulder Straps offering incredible comfort where it's needed most..
Other key design features of the new packs include easy and convenient access to essential belongings at the top or through a large zippered front panel and internal compartment divider and organizer pockets makes the business of finding all your essentials stashed away incredibly easy. Essential added waterproof protection comes from taping on the pack's top and bottom which shields against any unexpected sudden downpour which can frequently occur when high up in the mountains. Accessory attachment details include a retractable trekking pole/ice axe loop, sleeping pad straps and hydration compatibility.