How to Choose Bike Racks and Bags

Keep your ride essentials secure in the REI Co-op Junction Seat Wedge. Offering a convenient spot for all your on-the-go fix-it gear, this bag will have you wondering how you ever lived without it.
Imported.
View the REI Co-op Junction Product LineView all REI Co-op Saddle Packs| Best Use | Cycling Bikepacking |
|---|---|
| Gear Capacity (L) | 0.75 liters |
| Gear Capacity (cu. in.) | 46 cubic inches |
| Material(s) | Main: 100% recycled oxford nylon (bluesign approved)/3 mm PE foam; interior mesh: polyester (bluesign approved); lining: 100% recycled polyester (bluesign approved) |
| Dimensions | 6 x 3.75 x 3.5 inches |
| Weight | 3.1 ounces |
| Sustainability | Contains materials that meet the bluesign® criteria Contains recycled materials From a Climate Label Certified brand |
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The three bag straps could be better. The seat post strap should be a one-piece design with a loop to allow the strap to double back upon itself and become tighter against the seat post. The under the saddle strap should have smaller buckles so as to easier fit under some seat designs. The rear strap for the "blinky" light is mounted too low on the back flap which offers little support to an attached light thus allowing the light to tilt downward and flash at the rear wheel rather than straight backward toward traffic.
My iPhone14 needed a better place than my jersey pocket to accompany me on rides. My old seatpost bag was not large enough, but I didn’t want a suitcase. This bag is perfect: spare tube, ID, house/car keys, and iPhone fit with a little room to spare. Fits neatly on my road bike, and is fairly light. Fabric is water-resistant, not waterproof, but that’s ok for my needs.
This is the perfect size to hold the tube, tire tools, and patch kit that I needed LAST week when I stranded myself 5 miles from home. It fits under the seat securely.
From feedback to field testing, all of our gear is dialed-in by REI Co-op members. Their adventures informed every stitch and detail—making for better, longer-lasting gear.

