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A versatile classic, the durable Mountainsmith Day lumbar pack started the waistpack craze in the 80s. It lives on in a modern incarnation as a favorite of hikers and outdoor-minded travelers.

  • Features

    • Interior foam-padded sleeve for tablet carry; zippered front panel pocket with key clip; reinforced side pockets hold up to 32 fl. oz. bottles
    • Smartphone-compatible waistbelt pocket with headphone port fits iPhone® 6+ and Galaxy™ S6
    • Inner Sanctum zippered compartment for small valuables
    • Removable shoulder strap; Strapette shoulder-strap compatible (Strapettes sold separately)
    • Patented Delta Compression System load adjustment; traditional front panel bungee attachment system
    • Tuckaway webbing waistbelt with forward-pull adjustment
    • FreeFlow ridged EVA padded back panel features a stash pocket ideal for securing a passport or boarding pass


    View all Mountainsmith Hiking Waistpacks
  • Technical Specs

    Best Use


    Frame Type


    Gear Capacity (L)

    13 liters

    Gear Capacity (cu. in.)

    800 cubic inches


    1 lb. 12 oz.

    Fits Waist/Hips

    28 - 48 inches


    610-denier HP Cordura nylon

    Number of Exterior Pockets

    3 + main compartment


    13 x 12 x 6 inches

    Pack Access




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