Banish knee rub
Body mapped shaping reduces the likelihood of knee rub by tapering the design in the right areas
Instability eliminated
Revolutionary V-Mount technology and dedicated internal shell eliminate unwanted movement from just two mounting points
Multiple mounting points in one
All Tailfin Top Tube Packs are both strap and direct mount compatible allowing you to fit as you choose to multiple bikes. Straps and mounting bolts supplied as standard
Carry what you need
Perfect for all day ride essentials and shaped to carry your phone in complete security
Tried & Tested
Awards and Reviews from the people you trust the most.
“Tailfin’s first foray into top tube bags has been a resounding success.”
“From a technical perspective, a few things make the Tailfin Top Tube Packs unique.”
“Tailfin offers up a super-refined take on a classic bag that fixes many of the issues present in the existing options.”
“All in all, another very well executed – and cleverly engineered – addition to the Tailfin range.”
“Buy this pack if you want the best, most stable top tube pack currently available.”
Top tip: Try searching for your bike make/model below to find others using this product on your bike.
This bag is very high quality. It features a convenient and well-designed fastening system that securely and firmly holds the bag in place. This is the next step in the evolution of top tube bags. The bag's design allows for secure attachment without having to touch the handlebars. The bag also includes a convenient phone compartment. In my opinion, this is the best top tube bag for a bicycle. When choosing a bag, it's important to use the template on the website to clearly understand the size that will be most comfortable for you. This is due to the different geometry of bicycles and rider positions. Many thanks to the designers and those who make these bags!
Top Tube Bag Zip - 1.1l
Although a bit pricy, the bag is extremely well made and looks like it is built to last. It fits as well as claimed and I am more than happy with the bag.
Top Tube Bag Zip - 1.1l
Use the specifications above or print our 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!)See our cleaning guide here.
No, the rubber V-Mount covers are pre-cut to allow screws to pass through neatly.
Specification
| The Fundamentals | ||
|---|---|---|
|
Size
0.8L |
Size
1.1L |
Size
1.5L |
|
Riding Style
Road / Gravel |
Riding Style
Road / Gravel / MTB |
Riding Style
MTB |
|
Weight
138g* |
Weight
154g* |
Weight
178g* |
*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.














