At VAUDE, Proof stands for waterproof and Made in Germany! With a load capacity of up to 3 kg, this bike seat post bag offers a lot of space and extra protection from water spray and dirt. Our developers have succeeded in integrating the KLICKfix Contour adapter into the design of the bike bag so that two separate compartments with wide-opening, waterproof zips are right on top of each other. This allows for good organization with heavier tools stowed at the bottom and a separate space for snacks or rain gear in the top compartment. The compact features are rounded off with a cargo net on the lid where you can store a wind vest, gloves or a rain jacket, even while riding. Attachment to carbon or other lightweight seat posts is not recommended; seek the advice of your bike manufacturer. The extremely abrasion-resistant, bluesign certified material consists of 64% recycled Econyl. The Proof Offroad M is made with fully waterproof, hf welding with eco-friendly manufacturing at the company's headquarters in Germany. The VAUDE Green Shape label stands for environmentally-friendly, functional products made from sustainable and bluesign certified materials. As a member of the independent Fair Wear organization with Leader Status, VAUDE is committed to fair working conditions and fair wages.