After taking it through a "no touch" car wash 3 times, I've noticed very minimal water leaks into the bed coming from the top rear corners, where the cover meets the tailgate. Water on the cover goes into the canister and down the drain tubes. The small leak doesn't bother me at all, adding some weather-strip would probably take care of the issue. I would recommend this to anyone looking for a strong low profile cover. Compliments from truck owners at almost every gas station makes me forget the crazy $ I paid for it.