Constructed using 500D High-End poly canvas tarpaulin - waterproof, tear resistant & fibre reinforcedWater resistant zipper*Protective velcro overlap to shield the zipper from the elementsWelded seams provide superior waterproofing compared to traditional stitchingExtra strong UV50+ securing straps with heavy duty Duraflex buckles to easily secure the luggage bag to a luggage tray or basket.Additional front buckles to reduce wind flappingEasy to fit, load and unloadStorage bag to keep the luggage bag protected between trips* Zipper is water resistant and not waterproof, therefore the bag should not be submerged in water.