The Beck Roll is a double bicycle bag that can vary in size due to its unique design. You can increase the bag's capacity from 15L to 20L by simply rolling the top less tightly. The Beck Roll is made of strong coated polyester, making it completely water and dirt repellent. The bag is equipped with a reflective band, ensuring you are well visible from the side in the dark. The Beck Roll comes in different colors and is suitable for both regular and electric bikes. Made of Polyester Rear reflection Front band reflection Removable bottom Two colors 30 liters Capacity: 30 – 41 liters Material: coated polyester L:34cm W:12cm H:33cm Bridge size: approximately 17cm