Zipper Tangent – Unrestricted Space. Unmatched Durability.
Sometimes, less is more. The Zipper Tangent is the answer for bikepackers who refuse to be limited by internal dividers. Custom-sewn to fit your frame perfectly, this bag offers one massive, cavernous space for your most challenging gear.
While divided bags are great for organization, the Tangent is built for bulk. It utilizes the loading potential of your main triangle down to the last square centimeter, giving you the freedom to pack exactly how you want.
Why choose a single chamber?
The Tangent features one continuous compartment, and that is its greatest strength. Without a horizontal partition cutting the space in half, you gain the ability to transport items that simply won’t fit in other bags:
- Hydration Bladders: Easily fit a 2L or 3L water bladder vertically without kinking the hose.
- Bulky Gear: Cooking pots, fuel canisters, or a folded spare tire fit comfortably in the wider lower section.
- Long Items: Tent poles or a pump can sit diagonally across the entire length of the bag.
- Winter Layers: Thick down jackets or sleeping bags can be stuffed in and compressed without fighting against a divider.
Don’t worry about small items getting lost at the bottom – we’ve included an internal pocket near the zipper for keys and a wallet, plus an external mesh pocket for snacks on the go.
Velcro straps vs. bolts: Why straps win?
In the world of bikepacking, bolt-on bags (using water bottle bosses) are trendy. But at Crosso, we prioritize longevity and reliability.
The Problem with Bolts: When you bolt a heavy bag to a frame, all the vibration and weight are concentrated on three or four tiny points. Over time, this stress often causes the bag material to tear around the eyelets or the bolts to loosen.The Crosso Strap Advantage: The Zipper Tangent uses a system of movable Velcro straps lined with non-slip material.
- Stress Distribution: The straps wrap around the frame tubes, distributing the load over a large surface area rather than a single point.
- Vibration Damping: The straps absorb road chatter, preventing damage to both the bag and the bag’s structure.
- Indestructible Hold: Our non-slip lining ensures the bag stays rock-solid, even on the roughest trails, without damaging your frame’s paint (though we still recommend protective tape!).
🛡️ Cordura® TPU: Tough & Splash-Proof
Built from our legendary Cordura® TPU, the Zipper Cosinus is incredibly resistant to abrasion and tearing. The thick internal TPU coating ensures the fabric itself is waterproof.
Important Note on Water Resistance: Unlike our Dry series, this bag is constructed using a sewing process. While the fabric is waterproof and the zipper is splash-proof, the seams are not sealed. The bag will withstand moisture and moderate rain, but it is not designed for full submersion. We recommend packing sensitive electronics in a dry bag inside.
🎒 Pocket Organization
We know you need quick access to essentials. The Tangent features:
✅ Internal Pocket: Located just below the main zipper for keys, wallet, or documents – see the main gallery above.
✅ External Mesh Pocket: Located on the non-drive side. Perfect for stashing energy bars, gels, or wrappers on the go.
⚠️ Important Ordering Information
🛑 Custom Product: Since this bag is made-to-measure specifically for your frame, returns are not accepted. Please measure carefully!
📏 Production Tolerance: +/- 3% in dimensions.
🛡️ Frame Protection: Even with our non-slip straps, long-term vibration and grit can dull your bike’s paint. We highly recommend applying protective tape or foil to your frame before mounting any bikepacking bags.
📏 Order Now, Measure Later!
We will guide you through every step to ensure your custom bag fits perfectly!
Don’t worry about technical details at checkout. Simply place your order today, and we will send you a separate email with easy-to-follow instructions on how to provide your frame’s dimensions.
Ready to maximize your storage? Order your custom Zipper Tangent today.
