ORTLIEB using waterproof material - Brand: ORTLIEB - Model: C111 - Color: Black - Features: Waterproof material - Type: Bicycle pannier bag Product Description This is a set of two "Back-Roller Classic" pannier bags from ORTLIEB, a German manufacturer of completely waterproof bags. These pannier bags attach to the rear carrier of a bicycle and are a representative model that has been made since the company's founding. The material is thermoplastic-coated fabric, and the bags are completely waterproof due to advanced high-frequency welding. Surface dirt can be wiped off with a cloth dampened with diluted neutral detergent. Do not use a washing machine or dryer. They feature high waterproof and dustproof functions and durability, and can be widely used for travel, commuting, and going to school. Equipped with the QL2.1 system, they can be attached to and detached from the carrier without tools. The capacity is 40L per pair, and the size is H42xW23/32xD17cm. I believe I purchased them for around 25,000 yen. I used them twice for long touring trips, and I have no complaints about their waterproofness or durability. They have ample capacity, and they didn't interfere with the tires or my pedaling while riding.