Top Tube Bag – Zip

From: £52.00

Handy storage for items needed on the go, in a place that’s instantly accessible.

Specially sculpted 3D welded shapes eliminate knee rub. Patented V-Mounts secure the pack to your frame without risk of damage and remove the need for a front stabilising strap.

All Top Tube Packs can be fitted with straps or as a bolt-on attachment (all hardware supplied).

Also available with Flip Lid >



0.8 spec image
1.1 spec image
1.5 spec image
The Fundamentals






Riding Style

Road / Gravel

Riding Style

Road / Gravel / MTB

Riding Style














*Direct Mount. Add 12g when Strap Mounted

Looking for even more detail? Read the full deep dive and discover what went into over 2 years of product development.


Media Reviews

"From a technical perspective, a few things make the Tailfin Top Tube Packs unique"

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"Tailfin offers up a super-refined take on a classic bag that fixes many of the issues present in the existing options"

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"All in all, another very well executed – and cleverly engineered – addition to the Tailfin range"

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"Tailfin’s first foray into top tube bags has been a resounding success"

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"Buy this pack if you want the best, most stable top tube pack currently available"

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Top tip: Try searching for your bike make/model below to find others using this product on your bike.

Customer Reviews

Based on 566 reviews
Lisa Cummings (GB)
Bike: Liv Devote 1
Riding Style: Road / Ultra-endurance
Tailfin Top Tube Bag (Zip)

Such a great-quality bag! Large enough to hold my phone and snacks and great to have them out front, being more accessible, yet compact not to be rubbing on my legs while cycling! Very easy to attach to bike either with the straps or screws. Happy with my purchase!

Carlos Infante (US)
Bike: Canyon Grill
Riding Style: Bikepacking, Other
Excellent top tube bag!

I’ve been looking for a bolt-on top tube bag that was big enough but not too big. The range of sizes of the Tailfin bags was perfect. Very happy overall with the build quality and features. Only complaint was the drumming noise the zipper-pull made bumping along gravel roads. Fixed easily with some paracord.

Douglas Zink (US)
Bike: TREK Checkpoint
Riding Style: Road / Ultra-endurance, Bikepacking
top tube bag

Quality material and fit for my bike.


Use the specifications above or print our A4 Template and cut to size

Yes, the V-Mounts can accommodate any standard 20mm width cargo style strap. However be aware that many cargo straps use a longer prong that could catch skin or clothing.

Absolutely. Even when pulled very tight the natural stretch of our Cargo Strap system exerts minimal force to the frame.

You should base your choice on which bike you are mainly going to use and also how much storage you would typically need. Our 1.1 Litre Top Tube Packs are designed to fit almost any style of bike so would be our recommendation to be used on multiple bikes.

Our Zip Top Tube Packs offer the narrowest profiles so are perfect for riders who typically suffer from knee rub from top tube packs. They also offer the most secure storage to carry valuables on rough surfaces. Our Flip Top packs allow for rapid access and great visibility of contents, perfect if you want constant access to food, phone or camera whilst on the move. Flip Tops also offer slightly better weather resistance if riding in constant storm conditions.

No! When attached correctly the soft rubber of the V-Mount grips the frame so well that there is zero likelihood of movement.

We were at pains to ensure that all sizes of Top Tube Pack can accommodate a standard iPhone or Android equivalent, even the smallest 0.8 Litre pack. If you have a larger (Plus) style phone you will need to look at the 1.1 Litre or 1.5 Litre Top Tube Packs.

Within reason you can carry any weight in a Top Tube Pack. The limit would be volume.

Although the packs have been shaped to fit perfectly on the top tube the V-Mount system will allow you to fit a Top Tube Pack anywhere (except forks). We would recommend this only for Zip opening packs as a Flip Top opening would not be as secure in a vertical orientation.

The straps supplied with the Top Tube Packs are low profile so shouldn’t interfere with standard frame pump fittings.

As with all Tailfin soft goods we recommend that they be washed with warm soapy water if you want to clean them (although we like a good dirt patina!)

No, the rubber V-Mount covers are pre-cut to allow screws to pass through neatly.

Additional Product Imagery