Day Lumbar Pack

Color
Black Forge

UPDATED FOR 2026! One of the industry's first technical hiking lumbar packs, the Day is known for its function-first design. Built with ultra-durable Nylon dobby fabric and gear swallowing volume, the Day lumbar pack is a versatile solution for over-the-shoulder or around your waist carry.

For when demanding days...demand the Day.

The original technical hiking lumbar pack marches on stronger than ever after 40+ years. Built with ultra-durable dobby Nylon fabric, the Day lumbar pack is as comfortable as it is versatile. Whether you are a hiker, disc golfer, commuter, tailgater, birder, etc. this pack has the 13L carrying capacity for all of your needs. The large main compartment has a padded divider big enough for a tablet; large water bottle pockets on each side hold 1L bottles; the outer zippered pocket can hold quick essentials for easy access; and the Delta Wing Compression System helps keep the pack close to your lower back. Attach the included padded shoulder strap and you just got yourself an outdoor-inspired shoulder/commuter bag. For hikes outdoors, increase the Day's all day functionality with our running vest inspired Strapette EVO shoulder harness for backpack style carry out in the field.

FEATURES

  • Interior foam padded sleeve for tablet carry
  • Smartphone compatible zippered waistbelt pockets (Fits plus sized phones)
  • Strapettes & Strapette EVO compatible for backpack style shoulder strap carry (Recommended for loads 8 lbs+) (Sold Separately)
  • Tuck-away, removable waistbelt with forward pull adjustment webbing
  • FreeFlow backpanel padding
  • Delta Wing Compression System load adjustment
  • Side reinforced bottle pockets (fits up to 32oz / 1L)
  • Inner Sanctum™ interior zippered mesh pocket for small valuables
  • Zippered front panel pocket with key clip
  • Dual bottom panel compression straps
  • Removable 1.5” padded shoulder strap
  • Backpanel headphone/hydration hose port
  • Security webbing loop in main pocket for personal protection devices
  • Bright yellow lining promotes visibility
  • Waistbelt Fit: 28” - 48”

MATERIALS

  • 420d DD Dobby Nylon*
  • 150d High Density Poly Liner*
  • YKK® Zipper
  • *There are no intentionally added PFAS in this item

CALIFORNIA WARNING: Cancer and Reproductive Harm | www.P65Warnings.ca.gov

DIMENSIONS

  • 13” x 12” x 6” (L x H x D)

VOLUME

  • 793 in3 / 13 L

CAPACITY

  • Waistbelt Fit Range: 28” - 48”
  • Weight Load: Suggested up to 8-10lbs, increased weight load improves beyond 8 lbs with our Strapette EVO or Strapettes shoulder harness system (Sold Separately)
  • WEIGHT

    • 1 lb 11 oz / 0.77 kg

Customer Reviews

Based on 2 reviews
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Sean Chambers
A solid work bag.

I use mine with the shoulder strap for work. It's comfortable, sturdy and easy to adjust. I'm able to easily fit my work supplies, whatever book I'm reading and both my coffee and a nalgene bottle on the sides. I wish it had a wider variety of color options.

M
Mark Kennedy
Near Perfect pack

Hands down the most versatile little pack I've owned. Originally bought it for a trip to Europe to keep essentials, valuables, and water close at hand. It performed flawlessly as a personal item under the plane seat—fitting a full change of clothes—and was a lifesaver on the ground for daytime outings and impromptu picnics. I loved it so much abroad that it’s now my everyday carry back home in the States. 10/10 recommendation!