Paperdry Premium PVC Waterproof Clipboard Prepared. A spring-loaded cover protects your papers from the rain and wind while you write, and it closes with strong velcro to keep them secure and dry when not in use. Since it's see through, you can refer to your documents at any time. Premium. There are several different grades of PVC available. Here at Paperdry, we only use the best: it's thicker and also treated with a cold-proofing agent, meaning our clipboards don't crack in cold weather. They're robust and durable, and an 18 month warranty is included as standard. Practical. A clip inside the cover keeps your papers secure. On all models, there's also a clip on the back (two clips on the A3 Landscape model), to use your Paperdry clipboard when it's not raining.