REI Co-op Mars Pack - '07

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With two loading options and an ultra-adjustable suspension, the updated REI® Mars handles extended backpacking in any season--on any planet!

  • Features

    • Dual access to pack: top loading plus a horseshoe-zipper front panel opening, like a duffel, gives complete view of contents
    • With a new ''rip-and-stick'' torso adjustment, shoulder strap system easily slides on pack's frame to fit torsos of varying lengths
    • Removable top lid pocket lets you stash some essentials to bring into tent, so pack can stay outside or in vestibule
    • Zippered pocket under lid stores maps and keys, spare batteries and other small essentials
    • Front panel features an oversized zippered pocket protected with a waterproof zipper for storing often-used gear
    • EVA Soft Edge shoulder straps move seams away from you body with cushioned edges for non-binding comfort on and off the trail
    • Durable molded foam backpanel has channels for air circulation, increasing ventilation to keep your back cool and dry
    • Pre-curved waistbelt with a Delrin® hoop is designed to cradle hip bones for a more natural fit and distribution of pack weight without sagging
    • V-pull waistbelt allows you to use a natural forward pulling motion for quick, easy cinching and precise adjustment
    • Internal sleeping-bag compartment is created by a zippered divider, separating it from gear and clothes in the main compartment
    • Utilizing four buckles, the pack's streamlined compression system lets you cinch and strap down loads for jostle-free carrying
    • Concave head pod at the top of pack gives your head freedom of movement--no more staring at the ground
    • External mesh side pockets hold water bottles, energy bars and other essentials you want close at hand
    • Behind mesh pockets both sides feature zippered accessory pockets that are sized to fit gloves, hat, energy gels and more
    • Hydration-compatible design features an internal reservoir sleeve and dual exit ports for drinking tube


    Specifications based on size Medium
    View all REI Co-op Backpacking Packs
  • Technical Specs

    Frame Type

    Internal Frame


    5 lbs. 5 oz.

    Adjustable Torso Length


    Fits Waist/Hips

    28 - 48 / 33 - 60 inches

    Number of Stays


    Number of Exterior Pockets

    6 + main compartment

    Best Use


    Fits Torso Length (in.)

    17 - 20 / 19 - 22 inches



    Frame Material


    Sleeping Bag Compartment




  • Reviews
    74 reviews with an average rating of 4.3 out of 5 stars

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