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 14 reviews
Perfect fit

I bought the tail fin rack and pannier for commuting. It has been a workhorse that does its job perfectly. It fits exactly what I need, is essentially waterproof when closed, goes on and off the tailfin rack effortlessly, and so far has not shown any signs of wear. It really is amazing how I don’t even know it is there during my ride. Fits tight, doesn’t noticeably shift my weight. While it is a good size that you can stuff vertically to get more into it, it would be nice to have a slightly larger version. The only pannier that competes is the Ortlieb for durability, and they have larger versions. I understand that they are designed more for travel. I am debating getting a second one or getting an Aeropack. Overall very happy with my purchase and would buy again.

Best rack/pannier system I've ever owned

I'm currently on a five-day trip in North Carolina's Blueridge Mountains. I'm staying with friends, so I go for daily rides with my new Ritchey Outback gravel/travel bike--and every day I take along a few things such as rain gear, a snack or two, a spare tire and a few other items, in one pannier mounted to the T1. Most of the riding is on asphalt, but every day has seen rough gravel sections in the endless forests of this area. There is no sway or movement from the pannier. The way it locks onto the rack in the mornings when I take off is sheer incredible: Three seconds, tops. The Outback uses thru-axles, and mounting the rack to the bike is a 15-second affair (on two rides my friends shuttled me to a different starting point and I had to remove the rack temporarily). I also have a "normal" Ritchey BreakAway that I took to NZL this spring, with QR axles. I rented a campervan and did loop trips every day, and of course used my T1 and a pannier to take stuff along. In a week I'll be in Germany and I'm taking an extra T1 plus pannier set for GF. The initial plan is for a few overnighters from her home base. The cool thing is that the rack will fit on her bike, sight unseen. I'm in the planning stages for true bike packing trips in both Cuba and Chile where I will be carrying more stuff, obviously. I've used saddle bags and of course other panniers, but they pale in comparison to the stability of this system--plus you can fit it on virtually any bike, whether there are eyelets or proper braze-ons (impossible of course on carbon bikes). My bike touring experience includes crossing the US, riding from Alaska to the Panama Canal, and thousands and thousands of miles in Europe, East Asia, and the Americas. At age 63 I'm no longer all that excited about some of the pain that comes with self-supported touring, but the Tailfin system has rekindled the wish for more adventure (e.g. the planned Cuba and Chile trips). Once I have my Aeropack I'll be ready for anything.

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