REI Co-op Junction Seat Bag

Color: Asphalt
Size: One Size

Members get an estimated $4.00 (10%) back on this item as a part of your annual .

Members get an estimated $4.00 (10%) back on this item.
To buy,  sign in as an REI Co-op Member or join now.

Hang it and forget it. The REI Co-op Junction seat bag is light and unobtrusive, yet roomy enough to hold a mini U-lock, spare tube and bike tool—stuff you'll be very glad to have when you need it.


  • Made with rugged, water-resistant oxford nylon with a durable water repellent (DWR) treatment that repels light rain and tire spray
  • Large zippered main opening with 2 internal pockets
  • Compression straps keep the load tight on bouncy trails
  • Reflective loop for attaching blinky light
  • Reflective logo helps you stay seen in low-light situations
  • Made using bluesign®-approved materials, which conserve resources and protect the health of the environment, workers and the user (you!)


View all REI Co-op Saddle Packs

Technical Specs

Best Use

Bike Commuting

Gear Capacity (L)

4 liters

Gear Capacity (cu. in.)



Ballistic nylon (bluesign® approved)


5 x 10 x 5 inches


6.5 ounces


Contains materials that meet the bluesign® criteria

From a Climate Neutral Certified brand

31 reviews with an average rating of 4.5 out of 5 stars

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