This is an ORTLIEB Back-Roller Classic. It's a fully waterproof pannier bag with a quick-release system. Capacity: 20L I bought these for bicycle touring, but I only used them a few times for everyday use and then stored them. The color is a rare brown. This listing is for a single bag, not a pair. - Brand: ORTLIEB - Color: Brown/Black - Type: Pannier Bag - Features: Waterproof - Mounting: Quick-Release System - Capacity: 20L There are a few minor scuffs and signs of use, but the condition is very good overall. I am also listing a Sport-Roller Classic in the same color, and I will offer a discount if you purchase both. I hope you will consider it.