Great Cover, a little pricey, but Very Nice
Installed on my 2015 Silverado 1500 short bed in about 2 hours by myself. I haven't installed the drain tubes yet, but the only areas in the bed that got wet were right under the drain holes and not that much either. I'd say it's pretty weather proof. The lock is nice as well as the keyless open option. Install the side rails and the top with the tail gate closed to make sure you don't have a gap between the top and the tail gate.