Coconino Seat Bag

Coconino Seat Bag



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The Coconino is our full-size, standard-seatpost seat bag, absolutely unique in design and function. Tired of seat bag sway but not looking for an easily-damaged rack-style stabilizer system? The Coconino is for you.

  • No sway or bounce on even the roughest trails
  • No fragile rack-style stabilizers
  • Super-fast removal/installation at camp
  • Extremely durable, waterproof and water-resistant materials - more details here.

"Just wanted to tell you how happy we are with our Bedrock Bags... the Coconino Seat Bag is fantastic! Super stable… Just great, great bags." -Ravi F., California


  • RailWing stabilizer = rock solid on the trail, virtually unbreakable, quick release and attachment at camp; circa 2015


Born on a rough singletrack tour, the Coconino is our full-size seat bag for standard, non-dropper posts. Utilizing our original, long-proven RailWing technology, the Coconino doesn't sway, sag, or move on even the roughest trails. Unlike systems that rely on fragile rack-style stabilizers, the Coconino easily survives crashes intact. And unlike systems that rely on straps threaded through the saddle rails to attach the bag, the RailWing also allows the Coconino to install and detach very quickly at camp.

The Coconino is truly a very different and improved take on the bikepacking seat bag. Ride as hard as you want – the Coconino will be there, rock solid, no matter what!

If you're looking for a seat bag for dropper post use, check out our ground-breaking Black Dragon.


Weight: 419 grams / 14.8oz. Capacity: 7-12 liters, depending on how far you roll it up. Made in Colorado, USA.


The Coconino requires 5" of exposed seatpost and a minimum of 7.25" from the saddle rails to the nearest point on the rear tire. Remember, if you have a full-suspension, the rear wheel moves - check clearances with the rear shock fully compressed!

The RailWing works on almost every saddle out there - essentially anything with "standard"-shaped rails. It does not fit: Brooks and Selle Anatomica leather saddles (it does work on the Brooks Cambium and the new Selle Anatomica X2), Fizik Kurve saddles. Carbon rails are NOT a good idea (this is true with any seat bag design).

The Coconino is not compatible with dropper seatposts. If you have a dropper post, try our groundbreaking Black Dragon instead!


For installation instructions (very important!), watch the video above.

Step-by-step instructions:

To install the Coconino:

1) Mount the RailWing, without its strap, to the back (slanted) portion of your saddle rails. Make sure bolts are snug, but don't go nuts.

2) Slide the RailWing strap through the rails and velcro to the top of the RailWing.

3) Pack your Coconino (see below) and roll the closure down tightly. Clip the roll into the compression straps near the nose of the bag and cinch down.

4) Push the loaded and closed Coconino into the RailWing, keeping the bag centered, and keeping the nose cone and seatpost strap aligned with the seatpost. Clip the RailWing straps into the female buckles on the main bag; secure the seatpost strap tightly. Cinch the RailWing straps tightly, and go ride. When freshly packed, you may need to retighten all straps after a bit, as the contents compress.

Like most bikepacking bags, the Coconino depends somewhat upon its contents for shape and stability. Stuffable items work best - clothing, tents, bivys, sleeping bags, etc. You can wrap other items in soft goods to mute edges and increase packability. Load heaviest items into the nose, near the seatpost; make sure to fill out the nose cone and top of the bag with gear. Stuff items tightly and don't be afraid to use those compression straps - they are there for cinching things down!


Many of our products are named after geologic layers. "co-co-NEE-no" - a sandstone formation consisting of ancient sand dunes. Bike-toting hikers descend through Coconino cliffs in the Grand Canyon during the Arizona Trail Race.


FREE domestic shipping on orders over $249! For shipping details, click here.