This protective edging for your bike's cargo box simply clicks into place. Press the protective edging along the top rim of the cargo bike box, starting on the handlebar side. Apply enough pressure to the protective edging to make sure it's firmly attached to the cargo box. Start with the longer side of the cargo box where the bench is. If not, the protective edge will not have enough tension and must be pulled more firmly into place. Your box will be fully protected from the rain in no time!