Super Happy
I've had my MX4 for about a month now. It shipped fast within 3 or 4 days. After watching the install video on the website, I installed it by myself in about 40 min with no issues. It's been through some heavy rain storms and stayed dry inside the bed. Really only time water has got inside the bed has been when spraying it at the car wash it got a little wet on the tailgate end as expected. So far super happy and it looks great in my opinion. BTW my MPG has increased slightly from about 16.2MPG to 17.5MPG on my 3.5L EcoBoost F-150.