Skip to content
  • 🛍️ Shop more, spend less, with free shipping 🛍️
  • 🛍️ Shop more, spend less, with free shipping 🛍️
Outdoor Camping ShopOutdoor Camping Shop
  • Menu
    • No products in the cart.

      Return to shop

  • Cart

    No products in the cart.

    Return to shop

  • Tents
    • Tent Footprints
    • 3 Season Tents
    • Tent Accessories
    • Tarps & Wings
    • Hammocks
    • 4 Season Tents
    • Bug Shelters
    • Bivies
    • Ultralight Tents
  • Sleeping Bags
    • Synthetic Sleeping Bags
    • Down Sleeping Bags
    • Bag Liners
    • Quilts & Blankets
    • Sleeping Bag Accessories
  • Kitchen
    • Cookware
    • Backpacking Meals
    • Utensils
    • Cups & Mugs
    • Energy Food
    • Kitchen Accessories
    • Camp Stoves & Grills
    • Plates & Bowls
    • Stove Parts & Accessories
    • Titanium Cookware
    • Alcohol & Wood Stoves
    • Coffee & Tea
    • Beer & Spirits
    • Canister Stoves
    • Bear Canisters
  • Sleeping Pads
    • Air Pads
    • Self Inflating Pads
    • Travel & Camping Pillows
    • Accessories
    • Cots
    • Chair Kits & Seating
    • Closed Cell Pads
  • Camp Chairs
  • Backpacks
    • Backpacking Packs
    • Ski & Snowboard Packs
    • Pack Accessories
    • Hydration Packs
    • Daypacks
    • Climbing Packs
    • Duffels & Totes
    • Lumbar Packs
    • Travel Packs
    • Courier & Shoulder Bags
    • Child Carriers
    • Dry Packs & Bags
    • Kid’s Packs
    • Ultralight Packs
Home / Backpacks / Lumbar Packs
  • Chattooga Duffel -Outdoor Camping Shop 55403 04 RoyalPurple na front 011422 2000x2000 rsz 57128.1654556994
  • CONA 4 -Outdoor Camping Shop 21 10000 01 Cona 4 Blackout Main 13597.1648687913
Sale!
Sierra Designs Flex Lumbar 3-6
Sierra Designs Flex Lumbar 3-6 - Image 2
Sierra Designs Flex Lumbar 3-6 - Image 3
Sierra Designs Flex Lumbar 3-6 - Image 4
Sierra Designs Flex Lumbar 3-6 -Outdoor Camping Shop sd2019 flexlumbar 80711520pt angle print rsz 95374.1626823244
Sierra Designs Flex Lumbar 3-6 -Outdoor Camping Shop sd2019 flexlumbar 80711520pt bottle print rsz 08383.1626823247
Sierra Designs Flex Lumbar 3-6 -Outdoor Camping Shop sd2019 flexlumbar 80711520pt back print rsz 65549.1626823234

Sierra Designs Flex Lumbar 3-6

$69.95 Original price was: $69.95.$48.97Current price is: $48.97.

SKU: YMFJA 6811 Categories: Backpacks, Lumbar Packs Tags: Lumbar Packs, Sierra Designs
  • Guaranteed High Quality
  • Safe Transactions, Always
  • Unbeatable Quality Guaranteed
  • Control the delivery date and try to deliver it in the fastest time
Browse
  • Backpacks
    • Backpacking Packs
    • Child Carriers
    • Climbing Packs
    • Courier & Shoulder Bags
    • Daypacks
    • Dry Packs & Bags
    • Duffels & Totes
    • Hydration Packs
    • Kid's Packs
    • Lumbar Packs
    • Pack Accessories
    • Ski & Snowboard Packs
    • Travel Packs
    • Ultralight Packs
  • Camp Chairs
  • Kitchen
    • Alcohol & Wood Stoves
    • Backpacking Meals
    • Bear Canisters
    • Beer & Spirits
    • Camp Stoves & Grills
    • Canister Stoves
    • Coffee & Tea
    • Cookware
    • Coolers
    • Cups & Mugs
    • Energy Food
    • Kitchen Accessories
    • Liquid Fuel Stoves
    • Plates & Bowls
    • Stove Parts & Accessories
    • Tables
    • Titanium Cookware
    • Utensils
  • Sleeping Bags
    • Bag Liners
    • Down Sleeping Bags
    • Quilts & Blankets
    • Sleeping Bag Accessories
    • Synthetic Sleeping Bags
  • Sleeping Pads
    • Accessories
    • Air Pads
    • Chair Kits & Seating
    • Closed Cell Pads
    • Cots
    • Self Inflating Pads
    • Travel & Camping Pillows
  • Tents
    • 3 Season Tents
    • 4 Season Tents
    • Bivies
    • Bug Shelters
    • Hammocks
    • Tarps & Wings
    • Tent Accessories
    • Tent Footprints
    • Ultralight Tents
  • Uncategorized
  • Description
  • Additional information
  • Reviews (0)

Lightweight lumbar pack with adjustable volume

The Sierra Designs Flex Lumbar collection takes the same expanding gusset found in the popular Flex Capacitor and shifts it vertically to work as a lumbar pack. Integrated water bottle pockets and enough room to stash a layer and some food means you have your bases covered for any day hike. Flex it open when you need to carry more, or cinch it down when you want a lower-profile pack.

Other Features:
Hip fit: 52″ / 132 cm max

• Stretch mesh water bottle pockets
• Zippered valuables pocket
• 1 main compartment, 1 hidden top zipper
• Vertically expandable volume
• Dual compression straps to stabilize load
• Padded hip belt for on-trail comfort

Material: 100D Nylon-Poly Ripstop

Brand Name:

Sierra Designs

Cubic Inches:

183-366

Liters:

3-6

Color:

Peat

Weight:

8 oz / 0.23 kg

Dimensions:

6" x 10" x 5" / 15.2 x 25.4 x 12.7 cm

Mfg Sku/Part Number:

80711520PT

UPC:

054003819664

Reviews

There are no reviews yet.

Be the first to review “Sierra Designs Flex Lumbar 3-6” Cancel reply

Related products

Sale!
Gregory Miko 25 - Men's
Quick View

Backpacks

Gregory Miko 25 – Men’s

$139.95 Original price was: $139.95.$99.99Current price is: $99.99.
Sale!
Mystery Ranch D-Route
Quick View

Backpacks

Mystery Ranch D-Route

$108.95 Original price was: $108.95.$76.27Current price is: $76.27.
Sale!
Sierra Designs Moon 3 Footprint
Quick View

Tent Footprints

Sierra Designs Moon 3 Footprint

$39.95 Original price was: $39.95.$27.97Current price is: $27.97.
Sale!
Ortovox Ascent 30 Avabag
Quick View

Backpacks

Ortovox Ascent 30 Avabag

$307.00 Original price was: $307.00.$98.99Current price is: $98.99.
Sale!
Sierra Designs Meteor 4
Quick View

3 Season Tents

Sierra Designs Meteor 4

$399.95 Original price was: $399.95.$96.99Current price is: $96.99.
Sale!
Mystery Ranch Urban Assault 24
Quick View

Backpacks

Mystery Ranch Urban Assault 24

$178.95 Original price was: $178.95.$98.99Current price is: $98.99.
Sale!
Sierra Designs Basecamp Down Blanket
Quick View

Quilts & Blankets

Sierra Designs Basecamp Down Blanket

$99.95 Original price was: $99.95.$69.97Current price is: $69.97.
Sale!
Kelty Redwing 36
Quick View

Backpacks

Kelty Redwing 36

$134.95 Original price was: $134.95.$94.47Current price is: $94.47.
OUR SHOP
  • My account
  • Checkout
  • Cart
  • Payment Method
CONTACT
  • About Us
  • Contact Us
  • FAQ
  • Returns & Exchanges
CUSTOMER SERVICES
  • Privacy Policy
  • Shipping & Returns
  • Term and Conditions
  • Delivery
STAY IN TOUCH

Sign up for exclusive offers, original stories, events and more.

    Copyright 2026 © www.uscampingshop.com
    • Tents
      • Tent Footprints
      • 3 Season Tents
      • Tent Accessories
      • Tarps & Wings
      • Hammocks
      • 4 Season Tents
      • Bug Shelters
      • Bivies
      • Ultralight Tents
    • Sleeping Bags
      • Synthetic Sleeping Bags
      • Down Sleeping Bags
      • Bag Liners
      • Quilts & Blankets
      • Sleeping Bag Accessories
    • Kitchen
      • Cookware
      • Backpacking Meals
      • Utensils
      • Cups & Mugs
      • Energy Food
      • Kitchen Accessories
      • Camp Stoves & Grills
      • Plates & Bowls
      • Stove Parts & Accessories
      • Titanium Cookware
      • Alcohol & Wood Stoves
      • Coffee & Tea
      • Beer & Spirits
      • Canister Stoves
      • Bear Canisters
    • Sleeping Pads
      • Air Pads
      • Self Inflating Pads
      • Travel & Camping Pillows
      • Accessories
      • Cots
      • Chair Kits & Seating
      • Closed Cell Pads
    • Camp Chairs
    • Backpacks
      • Backpacking Packs
      • Ski & Snowboard Packs
      • Pack Accessories
      • Hydration Packs
      • Daypacks
      • Climbing Packs
      • Duffels & Totes
      • Lumbar Packs
      • Travel Packs
      • Courier & Shoulder Bags
      • Child Carriers
      • Dry Packs & Bags
      • Kid’s Packs
      • Ultralight Packs
    • Login

    Login

    Lost your password?

    Register

    Your personal data will be used to support your experience throughout this website, to manage access to your account, and for other purposes described in our privacy policy.