The Apidura Expedition Frame Pack is a large, yet light and above all completely waterproof bag, including taped seams, which can be securely attached to the top tube of the bike frame using several straps. The bag offers three liters of volume and is particularly suitable for heavier items of luggage. It is fastened with a total of four straps and thanks to the large loops, you only need one finger for each of the two waterproof zips.