It is constructed from a durable, PVC-free material, which provides a stylish textile look while being completely waterproof. It has an efficient main compartment with expansion bellows when the extra space is needed, which features a zip closure. Secure & Safe Comfort To ensure it is attached securely and safely it connects to the right or left side Back Gear Rack via the QRM 2.0 attachment system, which provides easy adjustment and hassle-free on-and-off the bike connecting. By using a bike lock, it can be locked in place to the QRM hook and as it is supplied with a shoulder strap, it is perfectly suited to inner-city riding, errands and countryside exploring at the weekends. Equipped with highly reflective sections to ensure high-visibility in traffic and low light. It is also ideal for use with the “Vaude Toolbag Back”, “Sortyour Back” practical accessory bags.