The Apidura Expedition Frame Pack is a large yet lightweight and, above all, completely waterproof bag, featuring welded seams, that can be securely attached to the top tube of the bike frame using multiple straps. The bag offers a volume of five liters and is particularly suitable for heavier loads. It is secured with a total of six straps, and thanks to the large loops on the two waterproof zippers, you only need one finger to operate each.