ULAC Mini Portable Bicycle Saddle Bag 0.5L Waterproof Tail Bag MTB Road Bike Quick Release Buckle Rear Bag Cycling Seat Pack

The reviewer mentions the ULAC Mini Portable Bicycle Saddle Bag as a saddle bag purchased from AliExpress, stating that it works just as well as saddle bags from Western brands and that there is not much safety risk in buying such a bag from China. The bag cost £13.