500 Waterproof Pannier Rack Bike Bag 20 L

I ordered the bag 2 weeks ago and on tuesday I was doing a shopping trip with them for the first time.
They were super easy to put on, with a screwdriver I was able to adjust it so that it fits my bike perfectly.
Even with maximum speed there is no risk for the bags to fall off the bike.
I wish I could have bought the yellow one but sadly they were sold out.
But as always i'm super Happy with the service and the product.
Well done Decathlon

I love it but by the time I was trying to fit it in my bike was a nightmare. The introduction is very complicated and not well explained.

Bought one to try and subsequently bought a second. fitted to my bike rack for shopping and other errands. Very useful and so far no problems with them.

This is a good pannier, yes it's not as sturdy as a £70 Ortlien but for the price is excellent. I've been using mince for 6 months on the daily commute and put my work rucksack into the pannier. I don't remove the pannier from the bike nad it lives quite happily there managing shopping trips for groceries or when i pop into town at the weekend.

I bought a bright yellow one, the red is good.

You can improve the bottom attachment by adding a few pop rivets to hold the bag to the plastic backing to make it a bit more secure. Also upgrade teh velcro strap to the hook from the 900 pannier model (see this part https://www.decathlon.co.uk/lower-rail-hook-set-id_8538528.html ) and by drilling two holes you have a much better attachment to your rack. An inexpensive £3.99 upgrade.

Would i buy again, yes i would.

I bought this item as I was sick of carrying a rucksack on short cycle tours.
I have since used it on three trips of between three and five days the longest of which saw three and a half days of torrential Scottish rain and strong winds.
I have always used a dry bag inside the rucksack and continued with it inside the pannier. There was a very small amount of water in the bottom of the pannier on the worst day but far less than I expected.
Frankly no one had dry kit on this trip and my pannier was drier inside than most. I was very impressed at its weather protection.
On the downside, I'm not convinced the soft construction would stand up to heavy use or items with hard corners or sharp edges.
I lined the sides and bottom with a thin sheet of stiff plasric and it's been fine.
The mounting system doesn't inspire confidence, however it's never fallen off either even on some pretty rough sections of trail.
Overall a very good value product for the price.

The construction of the bag looks good and should meet my needs.

Brought as a pressie for my sister and she loves it. Have to say I like it a lot and the price is great. Going to purchase one for me also.
Would recommend

I cycle everyday to work, this bag has been perfect, easily to fit, holds everything I need and waterproof, I have cycled numerous times in torrential rain and this bag has kept everything inside bone dry.

Highly recommend.

Good waterproof bag. Holds a lot of shopping.

Bought this to carry my dry clothes and laptop on my daily commute which takes 30 to 40 minutes. A good size and easy to fit, first sign of some decent rain and it let water in but didn't let it out quite so fast, result was my dry clothes sitting in a pool of water, fortunately I didn't have my laptop that day.
Have since switched back to my old panniers which at least let the water drain out the bottom.
B'Twin 500 NON Waterproof pannier now in the bin, waste of money.