CROSSO Zipper Top Bag

Bikepacking top tube bag in Cordura® TPU – quick one-hand zip access

The Crosso Zipper Top Bag is a top tube bag designed for riders who spend long hours on the bike and need immediate access to essential items without interrupting the ride.

Compact, stable, and built in waterproof Cordura® TPU, the Zipper Top is designed as a true cockpit organizer: snacks, smartphone, power bank, or multitool always remain within easy reach, just a few centimeters from your hands.

The one-hand splash-proof zip allows the bag to be opened quickly even while pedaling, without having to look for items in jersey pockets or stop riding.

With expedition-grade materials and an extremely competitive price, the Zipper Top is an intelligent solution for riders looking for technical quality without the markup of trend-driven brands.

A real control center on the top tube

In bikepacking, the top tube bag is one of the most frequently used elements throughout the day.

This is where the items that need to be accessible at all times usually go:

The Zipper Top Bag is designed exactly for this role: a small but extremely practical bag that becomes the quick-access point of the entire load system.

Quick one-hand opening

During long rides or technical gravel routes, it is not always possible to stop and look for an item in a backpack or pockets.

The Zipper Top uses a splash-proof zip with an oversized puller, designed to be operated easily even with:

This allows you to grab a snack or your phone quickly without losing rhythm while riding.

Cordura® TPU: expedition-grade materials

The Zipper Top is made from waterproof Cordura® TPU, a high-strength technical fabric also used in the most robust travel bags.

This material offers:

To increase protection from water, a splash-proof zip is used, designed to prevent moisture from entering while riding in the rain.

Transparency note:
the Zipper Top is a stitched bag, not a welded one. This means it performs very well against rain and splashes, but it is not designed for complete immersion in water.

Total stability even on gravel

One of the main weaknesses of low-cost top tube bags is the tendency to move sideways while pedaling.

The Zipper Top uses a three-point fastening system with high-strength Velcro, which keeps the bag stable even on gravel or during out-of-the-saddle efforts.

The front fastening point also integrates an anti-slip insert, which prevents the bag from moving when riding hard.

The other two straps are adjustable through slots, allowing the bag to fit different frame geometries.

Versatile mounting: two possible positions

The Zipper Top is not limited to the classic position near the head tube.

Thanks to its symmetrical configuration, it can also be mounted:

Many bikepackers use two Zipper Tops:

This setup improves load organization and frees up space in the main frame bag.

Recommended bikepacking setup

In a balanced bikepacking setup, the Zipper Top works together with other bags distributed across the bike.

A typical setup can include:

Many riders use two Zipper Tops combined with a full frame bag, creating a highly efficient load system that makes use of every available space on the frame.

To better understand how to distribute the load correctly between saddle bag, frame bag, and top tube bag, you can also consult the guide to load systems for touring bikes.

Safety and visibility

The Zipper Top integrates reflective logos on both sides, improving the bike’s lateral visibility in low-light conditions.

This is especially useful during:

Market positioning

In the bikepacking top tube bag segment, many high-end models easily exceed €55–90.

The Crosso Zipper Top Bag, offered at €39, instead uses technical materials such as Cordura® TPU and a design specifically developed for cycling use.

This makes it a particularly interesting choice for riders looking for:

without giving up the quality needed for bicycle travel.

Technical specifications

FAQ – Crosso Zipper Top Bag