Robust, water-repellent and high-quality material: this bike bag made of high-quality woven nylon. Woven nylon is a robust and water-repellent material. The base is double padded with a special thickening which ensures that the bag is non-slip and abrasion-resistant. The bag keeps your belongings completely safeWell made, solid and expandable capacity: 10 to 25 litre large load capacity, plenty of space for your cycling jacket, repair tools, tyre pump etc. The size of the main bag is 13 x 8.7 x 9.4 inches (33 x 22 x 24 cm) (L x W x H). On both sides there are two additional zipped pockets. They provide a further 7 litre capacity. Extended compartment size: 10.6 x 13 inches (27 x 33 cm) (L x H).Multi-functional cycle bag: If you are looking for a multi-functional and lightweight bag for hand luggage, then you have come to the right place. This bag offers three different carrying methods to fulfil your different backpack requirements. It can not only be used as a pannier bike bag, but also as a shopping bag and as a shoulder bag, with an adjustable shoulder strap. It is suitable for riding, walking, shopping or picnics.Unisex bag and easy installation: Our unisex black pannier bike bag is an ideal gift for men, women and even children. The bag is easy to carry. Two durable Velcro straps fasten the bag firmly behind the saddle. It is universal for all types of bicycles with a rear seat, such as a mountain bike, road bike etc.