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Go By Bike
Planet Earth is our home and our responsibility —we must do our part to preserve it. Learn how you can join the #GoByBike movement and help make a difference in the future of our planet and all who call it home.
Read moreResponsibility
There's a lot more to Trek than making the world's best bikes and cycling gear. Learn more about everything Trek is doing to make the cycling space safer, more inclusive, plus a whole lot more fun.
Read moreProduct features
Race-ready storage
With a race-inspired design, this bag tucks behind the headtube to keep nutrition, tools, and all your ride essentials within reach.
Recycled, durable material
The Ultragrid™ outer material is lightweight, ultra durable, and made of 100% recycled materials. The inside liner is also 100% recycled for a more sustainable storage solution.
Easy, bolt-on mounting for Checkpoint and Checkmate
Included hardware provides seamless, bolt-on integration for both the Checkmate SLR and Checkpoint SL Gen 3 gravel bikes — giving riders secure storage mounting and a clean asethetic. Plus, finding the right bag size for your bike is easy with our compatibility guide.
Made to maximize your hydration
The Trek Adventure Triangle Bag was designed to maximize the space you need to store your water bottles, so you can stay hydrated for the ride ahead.
Designed with smaller frames in mind
Optimize your on-bike storage with a bag created with smaller frames in mind. The 1.0L triangle bag lets you store your ride essentials, without sacrificing the space needed for water bottles and other gear to keep your adventures going.
Find the right size, right at home
With our printout sizing options guide, you can easily find the right bag size for your bike, hassle-free. Simply print the guide from a standard printer and place it on your bike's frame to find the best size for your ride. If the bag measures between two sizes, choose the smaller size for optimal integration.
Stay organized, inside and out
Internal pockets help keep your gear safely stored and ogranized, on even the bumpiest routes, while the external pockets keep your gear within reach at a moment's notice.
30-Day Unconditional Guarantee
If for any reason you're not satisfied with a Bontrager or Trek aftermarket purchase, return the item, along with the original sales receipt to the original place of purchase within 30 days for an exchange or refund. Think of it as a 30-day test ride.
Learn more| Cargo capacity | 1L | 1.3L | 1.6L |
|---|---|---|---|
| Bag type | Frame bags | Frame bags | Frame bags |
| Dimensions | 31cm (l) x 5.3cm (w) x 10.3cm (h) | 31.2cm (l) x 5.3cm (w) x 14.8cm (h) | 31.7cm (l) x 5.3cm (w) x 17.2cm (h) |
| Bag attachment type | Frame mounted | Frame mounted | Frame mounted |
| Water resistant | Yes | Yes | Yes |
| Material | Knit | Knit | Knit |
| Weight | 145g | 160g | 175g |