In addition to the most visible materials we use to make our waterproof bike panniers and transport bags, we also use some less conspicuous but equally important materials. You can find the list below Mounting straps Polypropylene, 2 and 2.5 cm wide. From a Polish producer. Zippers (used in a secure pocket in the flap) From a Polish … Continue reading Other materials used in the production of Crosso panniers and bags