Excellent storage box. I’ve only had it a few weeks but, so far, it has been completely waterproof. Watch out when you open it after rain, as water can collect on the edge of the lid and drop inside. I just wipe with a cloth before I open it. My only concern is that the lid seems slightly larger than the base and I’m wondering if driving rain will get inside. If it does, I’ll put a rubber strip around the edge. I’m really pleased with this box. You can sit on it but it’s a bit high. I put trays on it and use it as a buffet table. Excellent value, good quality and quite nice to look at for a plastic box.