BTR Waterproof Rear Rack Dry Bike Bag. Pannier Bicycle Bag

11 reviews
Next despatch day is 4 January 2021

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 - Royal Mail 48 - Usually Receive within 2-4 Working Days

£1.00 Postage -  Royal Mail 24 - Usually Receive within 1-3 Working Days

£2.50 Postage - Royal Mail TRACKED 24 - Usually Receive within 1- 2 Working Days


FREE UK Returns

We offer free returns within 28 days of purchase. 

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



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
4.9 Based on 11 reviews
Write a Review Ask a Question
  • Reviews
  • Questions

Thank you for submitting a review!

Your input is very much appreciated. Share it with your friends so they can enjoy it too!

Filter Reviews:
  • rack
  • size
  • price
  • panniers
  • straps
  • food
  • weather
  • work
  • space
  • fear
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.

Brian F.
United Kingdom United Kingdom
I recommend this product
Great value

Just need a top bag for a rear bike rack on my mountain bike found this while searching on line looked the job and was at great price. Ordered and delivered no problem product well made and doses the job easy to fit to a rear rack just used it for a 3 day mountain bike tour and was a solid bit of kit .

Christopher L.
United Kingdom United Kingdom
I recommend this product
Superb travel bag.

Have used this rear bag for my commute in deluge after deluge of driving rain.It has not let me down.A quick clean to remove grit and mud after every ride and this looks new again.Perfect size for my work change clothes,food,drinks and electricals.Thankyou BTR for wallet friendly product that outperforms more expensive brands.

Chris B.
Canada Canada
I recommend this product
BTR rear rack bag

This bag is great, good size and waterproof. I really like that it folds along the top length giving it much greater accessibility than a typical seatpack or drybag. It also has straps that independently strap onto the rack, and separate top straps to open the bag without removing it from the rack. Price is very good too. The only thing I could think of to improve it's design is something to stiffen the base from flopping on smaller racks and a valve for easier air purging when it's folded down. But honestly for the money, it already punches above it's weight already. Good design, simple and useful. A winner in my books.

BTR Direct Sports BTR Waterproof Rear Rack Dry Bike Bag. Pannier Bicycle Bag Review