UD | Ultra Durable Pannier Bag | Panniers | By Tailfin

When the going gets tough…

Constructed from a robust Hypalon rubber laminate, the UD is designed for those adventures where you need absolute faith in your equipment.

Waterproof without compromise

Featuring High-Frequency welded seams and a roll-top design, the UD offers total protection from the elements, however extreme the conditions.

Protect what matters most

Keep your valuable items safe in all weathers with the UD’s essentials pocket.

Total stability for the ultimate ride

The UD features a rigid, internal backbone that holds your belongings secure, keeping your ride smooth when the road is rough - or when there is no road at all.

Room for manoeuvre

Featuring a full 22 litres of storage space, the UD is the ultimate go-anywhere, do-anything pannier bag - ready to hit the road in pursuit of adventure.

A secure and rattle-free ride

The UD features an aluminium cam-action clamp that totally eliminates any annoying rattle, allowing you to focus on what’s important.

Installation film ›

Tougher than the city

Constructed from a durable Hypalon rubber laminate for all-weather protection, the UD is designed for the rigours of the urban commute.

Rigid backbone

The UD features a rigid, internal backbone that holds your belongings secure in all conditions.

Be seen, ride safe

Convenient mounting points for a rear light and high-vis detailing help keep you seen and safe, no matter how far-flung the adventure.

"Peerless stability, total absence of rattle, very light, incredibly quick and easy to fit and remove. 4.5/5"

Reviewed Feb 2018
Jez Ash

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"Tailfin delivers one simple, and very powerful, message: this is no ordinary rack."

Reviewed Feb 2018
Matt Wikstrom

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Overall customer rating

“A game changer of bikepacking scene.”

Reviewed November 2017
Kazuhiro Tanda

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Size limit

The Super-Light and Ultra-Durable bags can take up to 22 litres of luggage and will fit a 17" laptop.

Tailfin Care

Tailfin products have been designed to help you create incredible experiences - but we also want to make sure you’re covered when things don’t go as planned. That’s why every single one of our products is covered under Tailfin Care, providing you with real-world support that you can absolutely rely on.

Tailfin Care ›

Customer Reviews

Based on 12 reviews
Excellent Product

Having read many reviews about the Tailfin I decided to bite the bullet and purchase a rack and two panniers. The products are very good, although very expensive. You wouldn't know they are on the bike except for the added weight when laden. There is no movement while cycling and are very easy to fix on and off. My only negative comment is that it was not made clear when I ordered them that they were out of stock and not only did I have to wait over a month for delivery (having paid for the product) but I also had to chase to find out why they had not been delivered. To be fair to James they did give me with a free axle to use on a different bike. I now love my Tailfin :)


Having bought the rack and 1 pannier I have come back for a 2nd pannier. They are superb. Fast locking and removing, solid over the bumpy Bristol roads and has revolutionised my riding, arriving at work without a sweaty back from my backpack. There is no plastic with the packaging but less cardboard would be even better.

Excellent pannier! you get what you pay for

I use the Pannier with two bags every day to commute to work. The rides range from 3 miles to 40, on my cyclocross bike. You don't want to spend any more time than you have to attaching/removing gear from your bike, and with the bags I can un attach in seconds. Weight is fantastic as is build quality. I transport clothing, electrical goods and even in the worst the UK has to offer, the contents are always dry. You get what you pay for, and if your transporting a £1000 laptop every day, why risk a cheap option to save a bit of £

I will be buying from them again, great product

Absolutely lovely, but it has some limitations.

This is absolutely the coolest rack system I have ever owned in the 45 years that I've been getting around by bicycle. Lightweight, sturdy, and, as one bike mechanic I know said, ``Dead sexy.''

But there are limitations, as part of what the system is designed for. The panniers are narrow, which keeps them close to the bicycle. This is good for tight spots and for wind resistance. It's bad if I stop off to shop on the way home and already have work stuff in the panniers. If you buy the extension that allows you to put on your other, wider panniers, the system may need adjustment --- say if your other panniers have a hook and band holding system. Zip ties are unobtrusive and strong.

Also, as a cautionary note, when/if you are ordering, your order can say ``and panniers'' even if you have only ordered a single pannier. The idea of selling single panniers is --- how to put this concisely --- really weird.


Bought rack and 1 bag a while back. Planed on mybe buying cheaper second bag. But loved it so much bought the 2nd bag. As i said in T1 review, to much packaging while nice is to much especially the cardboard wrap around box.