A fully featured backpack with ergoACTIV Suspension, the Black Diamond Mercury maximizes comfort for long days on the trail.This product will be shipped directly from Black Diamond and will leave their warehouse in 2-3 business days. Eligible for UPS ground shipping only. Patent pending ergoACTIV XP suspension with OpenAir backpanel. SwingArm Shoulder straps are attached to each other through a low friction cable in the bottom of the pack. Both shoulder straps load evenly and adjust to each stride on the trail or reach on a climb. Proprietary custom-shaped ball joint attaches the hipbelt to the frame. Simple durable three-dimensional system maximizes load transfer to the hips and cants for an unrestricted stride. Aluminum M-motion frame has enhances stiffness and load transfer, and has 20 mm central strut for backpanel contouring. A top loading pack with zipped top pocket. Compartment divider, side and hipbelt pockets front and internal organizer pockets. Waterproof taping on the top and bottom slows the progress of moisture in wet conditions. Retractable ice axe/trekking pole loops. Hydration compatible