Apex 100 Liter Backpack

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No holds barred, the Apex 100 backpacking pack is the largest and most feature-rich offering in the Mountainsmith line. Designed from the waist belt up, with a focus on ergonomics, the Apex backpacking bag is a joy to wear while hiking. 

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Product Details

Emphasizing durability, this pack is built with CORDURA® fabric and a heavy duty yet lightweight aluminum suspension. This gargantuan pack is ideal for hunters carrying meat home or those who are carrying more than their own gear. Intuitive features make this a smart and convenient backpacking solution; including a hydration sleeve and port, side-canted water bottle pocket, lower sleeping pad access compartment, central U-shaped access zipper, external mesh stash pocket, smart phone-sized waist belt pocket, generous lash points for tools, ridged EVA back panel padding, pocket pass-through compressions straps , adjustable torso suspension, an easy forward pull waist belt, and a removable top lid for short trips from camp. To bring you peace of mind for your backcountry investment, Mountainsmith offers a lifetime warranty on their products. If you are looking for a durable pack for hauling very large loads, this is the pack for you.


  • TuningFork™ waistbelt framesheet for form fitting over iliac crest hip bone
  • Forward pull waistbelt with V adjustment webbing
  • Front panel stretch mesh pocket with daisy chain attachment loops
  • PE Framesheet with X configuration AL Stays and horizontal stabilizer bar
  • Anvil Airway ridged EVA backpanel padding
  • Smartphone compatible waistbelt pockets (Fits up to iphone 6+ or Galaxy S6)
  • Separate sleeping bag compartment with internal divider


  • Bar tack reinforcements
  • YKK® Zippers
  • 3M™ Reflective Cord
  • Materials:
  • 305d Multi-Rip Cordura®HP
  • 610d Cordura® HP
  • 210d Nylon Embossed Liner
  • Twin T6 0.75" Aluminum Stays


  • 31" x 11.75" x 9" / 78.7 x 29.8 x 22.8 cm (H x W x D)
  • Waist belt width: 1.5"
  • Waist belt circumference: 28" - 48"


  • 5800 cubic inches / 95 L
  • 6400 cubic inches / 105 L (Ext)


  • Up to 70 lbs


  • 6 lbs / 2.7 kg