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 >



top tube pack image
top tube pack image
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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 419 reviews
Cath (GB)
Bike: Mason Bokeh
Riding Style: Road / Ultra-endurance, Bikepacking, Touring
Top tube bag

This bag is excellent. Rock solid on the bike, surprisingly roomy. I have the smallest version but it still fits my I-phone, mini-pump
Tubeless plugs, snacks etc. another well thought out product. You can zip, unzip it on the move and it doesn’t budge, no knee rub either.

Thierry MICHEL (BE)
Bike: Sauvage LaPiste
Riding Style: Road / Ultra-endurance, Bikepacking, MTB
Top Tube Bag - Zip

On a technical level, the stability is incredible. This was what I was looking for above all and it exceeds my expectations.
The mount system is versatile (bolt / straps).
The rigidity of the bag and the one-handed zip facilitate access to the contents.
Finally, cherry on the cake, if turquoise doesn't suit you, a little black zip puller comes with it.
I highly recommend !

Matt Donegan (US)
Bike: Trek Domane
Riding Style: Road / Ultra-endurance
Top tube bag

I’d been searching for a while for a top tube bag sturdy enough to not have to be velcroed around the front of the bike, and this is it. Plenty of space for some extra food for the longer rides


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

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.

Yes, the V-Mounts have been designed to fit flat, boxy, carbon tubes seen on modern MTBs/road bikes and also round tubes on steel/Ti frames. Search our Reviews to see if another customer with the same bike is already using this product too.

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. If you're still unsure, we recommend printing our A4 template to check

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

Yes, but on some models (e.g URS) you will need to use the included straps and V-Mounts instead. The top tube screw on the URS frame is very close to the stem and so the bolt-on option is not possible

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.

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. 

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