BTR Waterproof Rear Rack Dry Bike Bag. Pannier Bicycle Bag

16 reviews
4 items left
Same day shipping on orders placed Mon-Fri by 1pm

Create secure, safe & dry space on your bike with our BTR Waterproof All Weather Bike Rack Dry Bag, designed to keep your valuables secure & dry in all weather conditions. 


  • Waterproof Material - Your contents stay dry without needing an additional rain cover
  • Roll Down & Easy Clip Waterproof Bag Fastenings - no zips or fastenings to let the water seep in - keeps your cargo dry and lets you access inside it fast!
  • Universal Fit - Adjustable straps ensure it attaches whatever the style or size of your rack & it stays put - does not move, shift or budge easily!
  • 3 Straps to attach to your bike rear rack – 2 integrated & 1 as an extra optional security strap
  • Wipe Clean – wipe mud & dirt off your cargo bag easily so it stays looking like new
  • Reflective Detail Stripes on the back - helps you to Be Seen & Be Safe!
  • Light Loop – so you can easily attach your bike rear light to be visible
  • Large Main Storage Area - Pack as much or as little as you like
  • Detachable Shoulder Strap - creates a waterproof bag so you can take your valuables with you when you get off your bike
  • Length 46cm, Width 22.5cm, Height approx. 23cm (when rolled shut)
  • Approx 20 litre capacity
  • Recyclable Cardboard Packaging


Important Attaching Instructions: Ensure the 2 integrated straps are twisted around your rack (see photos) to ensure the bag stays on your rack in transit.


To ensure a 100% Waterproof Bag:  Roll down the bag very tightly and hold in place by clipping in to the side & pulling tight.   

Delivery Information

FREE Postage -  Usually Receive within 2-5 Working Days.  

£2.00 - Receive item within 1-2 days


FREE UK Returns

We offer free returns within 28 days of purchase. (See Christmas Returns Below)

We offer Free Returns through Royal Mail. Please Contact Us to arrange your return


Christmas Returns

Anything purchased after November 1st 2021 for Christmas can be returned up until 21 January 2022



All items must be unused and still have the tags attached when they are returned to be eligible for this policy



BTR waterproof rack bag and pannier bag on bicycle on Lon las Cymru cycling routeBTR waterproof rack bag and pannier bike bag on bicycle on Lon las Cymru cycling routeBTR waterproof pannier rack bicycle bagBTR Waterproof Rear Rack Bike Pannier Bag on Bicycle on Beach between Edinburgh and NewcastleBTR waterproof Bike Rack Pannier Bag on stunning beach on Edinburgh to Newcastle coast and castle cycle routeBTR waterproof bicycle rack bag on bike on cycling route between Edinburgh and Newcastle
Customer Reviews
4.6 Based on 16 reviews
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David C.
United Kingdom United Kingdom
I recommend this product

Top rated bag

I am an expert on buying bike bags and own from the very expensive but top quality Ortleib brand to the Shanghai specials which fall apart after their first use. This BTR bag rates very favourably in comparison to the Ortleib brand and if price is the main driver this bag would be a joint number one. It is as advertised and illustrated on the website and the photos are an accurate reflection of its credentials. Even though I have had no reason to return an item to BTR I am comforted by the fact that they are a UK firm and that if there was a problem it could be resolved by a team in the same time zone and with a top reputation for customer service. No I am not being paid for this review, I wish I was, but it is a top bag from a UK firm and it needs promoting.

Michael R.
United Kingdom United Kingdom
I recommend this product

Great product

It is very good . And is exactly what I was looking for.

United Kingdom United Kingdom
I recommend this product

Superb BTR product rear pannier bag

What a great product! I can get a good couple of shopping bags of food in if need be by unfolding and using the supplied securing strap. I’ve also just purchased a BTR reflective coat which was superb value for money! Please bring out more clothing jerseys and tops please.

Peter J.
United Kingdom United Kingdom
I recommend this product

Wrong choice

Ordering and receiving process went well. Bag arrived without shoulder strap. Good material but disappointing attachment to rack. Returned bag over a week ago. Again process went well. No refund yet so no alternative product ordered.

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