Mountainsmith AT 55 Internal Frame Backpack 3143-3204 cu in.

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Mountainsmith AT 55 Internal Frame Backpack 3143-3204 cu in.

AT 55

ASTONISHING COMFORT, BOMB-PROOF CONSTRUCTION AND INTUITIVE DESIGN MAKE THE AT 55 THE PERFECT CHOICE FOR SERIOUS THROUGH-HIKERS AND WEIGHT-CONSCIOUS BACKPACKERS.

FEATURES

Load Dispersion Technology Suspension
Independently adjustable shoulder straps with dual density foam
Elastic sternum strap and bite valve catch
Molded foam back panel with air channels
Pivoting waistbelt with dual density foam and an HDPE sheet
Zippered pocket and sleeve on the waistbelt
4 load adjusters for load dispersion
Detachable lid that converts into a summit ascent pack
Zippered pocket under the lid
Top compression strap for climbing ropes
Collared storm shield with draw cord closure
4 compression straps with quick-release hardware
Expander sleeve for extra layers
Water resistant zippered side access into the main compartment
Dual ice axe loops
2 pleated and angled water bottle pockets that accommodate 32 oz water bottles
Hydration compatible with single exit port
Interior white coating promotes visibility

CONSTRUCTION

Twin T6 .75” 6061 concave & corrugated aluminum stays
YKK zippers
Bar tack & Hypalon™ reinforcements
210 High Tenacity Cordura™ nylon body fabric
210 Ripstop nylon body fabric
420d High Tenacity Cordura™ nylon reinforcement fabric

LARGE TORSO:
Fit Range: 20”-23” (51cm-58cm)
Dimensions: 30” x 12” x 10” (76cm x 30cm x 25cm)
Standard Volume: 2899 cu. in. (47.5 liters)
Extended Volume: 3204 cu. in. (52.5 liters)
Weight: 4 lbs 2 oz (1.91 kg)

REGULAR TORSO:
Fit Range: 17”-20” (43cm-51cm)
Dimensions: 29” x 12” x 10” (74cm x 30cm x 25cm)
Standard Volume: 2838 cu. in. (46.5 liters)
Extended Volume: 3143 cu. in. (51.5 liters)
Weight: 4 lbs 2 oz (1.91 kg)

Brand: Mountainsmith
Product Code(s): 06-60054, 06-60055
Price: $198.95
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Product Specifications
Frame:	Internal
Material:	210 High Tenacity Cordura™ nylon body fabric 210 Ripstop nylon body fabric 420d High Tenacity Cordura™ nylon reinforcement fabric
Hydration Compatible:	Yes
External Pockets:	4
Gear Loops:	Yes
Sleeping Bag Compartment:	No
Rain Cover:	No
Suspension:	Twin T6 .75" 6061 concave & corrugated aluminum stays
Recommended Use:	Weight-conscious Backpacking

Medium Pack Volume:	3143 cubic inches (51 cubic liters)
Medium Pack Weight:	4 lbs 2 oz (1871 grams)
Medium Torso Fit Range:	17” - 20”
Medium Pack Dimensions:	29” x 12” x 10”

Large Pack Volume:	3204 cubic inches (52 cubic liters)
Large Pack Weight:	4 lbs 2 oz (1871 grams)
Large Torso Fit Range:	20" - 23"
Large Pack Dimensions:	30” x 12” x 10”

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