VERTAST Multifunction Bicycle Sport Outdoor Rear Seat Trunk Bag Back Shoulder Handbag, Black2

Loads of storage, strong and looks good. Highly recommended.

I am very happy with this purchase. It seems to be well made, and is easy to fit securely onto the rear rack by means of 4 'Velcro' straps. Be warned though, it is fairly small so you won't be able to carry a lot in it. I find its volume adequate for a day ride (a few tools, some food and light clothing). A bulky item of clothing can be rolled up and carried on top using the elastic strap incorporated with the lid.

As the title says...

Very good. Fits well and is secure. Beats wearing a backpack or panniers if you have a small load. However, it is not waterproof in heavy rain.

Good quality bag with the zip side pockets but the Velcro straps that fasten under the pannier rack were not long enough, had to buy Velcro to extend them. But apart from that it is now perfect.

Haven't tested it in the rain or for commuting - just for leisure! It does everything I need it to do and I'm very happy with it.

Attaches well good storage. Fits everything I need on my cycle runs. Water bottle accessible and side pockets for phone. Don’t know about water resistant as not been in rain. All in all a good purchase.

Great size bag & very easy to attach to the rack. Fits loads inside including my big Krypto lock, waterproofs, snacks, tool etc... Haven't used it in the rain yet so can't comment on how waterproof it is.