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Mountainsmith - Apex 55L WSD Backpack - Women's

Mountainsmith Apex 55L WSD Backpack - Women's

35% Off
$129.95 Original price:$199.95
Changing the size selection, or changing the selected color after selecting a size, may change the associated price

Item #MOU007M




Tech Specs

[face fabric] 210d nylon ripstop, 420d nylon, [lining] 210d nylon
[standard] 56L (3425cu in), [extended] 61L (3725cu in)
7000 Series Tubular Aluminum frame
Shoulder Straps:
sock style (seamless), dual density EVA/PU foam, adjustable
Waist Belt:
Tuning Fork Waistbelt
top, front
[external] 1 front mesh, 2 side, 2 zippered waistbelt, [internal] 1 zippered lid with secondary pocket
Gear Loops:
Trekking Pole Carry:
elastic loops
Delta Load Compression System
Weight Capacity:
24 x 10.25 x 8.5in
Claimed Weight:
4lb 5oz
Recommended Use:
Manufacturer Warranty:

Apex 55L WSD Backpack

The Mountainsmith Apex 55L WSD Backpack is designed to provide you with a more efficient, comfortable carry for your multi-day backpacking trips and thru-hikes. Its durable construction holds up to the rigors of long days, or months, spend on the trail. A tuning Fork Waistband provides you with a more dynamic fit and improved load transfer while its thick padding ensures comfort against your body. Additionally, the Delta Load Compression System stabilizes the pack while you hike and the sock-style should straps have no seams or hard edges that could dig into your chest. While you're out on the trail, the tubular aluminum frame helps to keep the weight of the pack nice and low for an efficient and comfortable pack carry through the miles.

  • Backpack for an efficient, comfortable carry on extended trips
  • 55L accommodates your gear for thru-hikes or multi-day excursions
  • Durable construction withstands the rigors of life on the trail
  • Tubular aluminum frame sits weight of pack lower for performance
  • Hex-ridged EVA backpanel is highly breathable for cool comfort
  • Tuning Fork Waistband cups the hips for improved load transfer
  • Delta Load Compression System stabilizes the pack for your hike
  • Adjustable torso ranges from 16 to 20in to accommodate your body

Apex Backpack


     Scream 55Scream 25
    Approach 25
    Apex 80
    Lookout 45
    Mayhem 35
    Approach 35
    Mayhem 45
    Women's Apex 60
    Divide 22
    World Cup 25
    Kids' Pursuit 50
    Torso Measurement

    17 - 21in

    (43 - 53.5cm)

    15 - 20in

    (38 - 51cm)

    17 - 22in

    (43 - 56cm)

    16 - 21in

    (41 - 53cm)

    15 - 19in

    (38 - 48cm)

    13 - 17in

    (33 - 43cm)

    How to Measure:
    Measure your torso length by bending your head forward so your chin touches your chest. Feel for the most prominent bump at the back of your neck. Now measure from that point down to an imaginary line connecting the tops of your hips around your back. This works best with a partner's help.