https://www.amazon.com/Sunlite-Utili-T-Waterproof-Rear-Pannier/dp/B003BC9QT0/ref=sr_1_1?dchild=1&keywords=sunlite+utili-t+waterproof+rear+pannier&qid=1591302763&sr=8-1

Waterproof rear bike pannier, lightly used. Includes hooks and straps to mount on to bike rack.

Originally $50 from amazon, selling for $30 OBO.