We tried out the genius invention that fixes the MacBook's biggest design flaw

Anyone with a MacBook knows the square brick that's required to keep it powered up.

While Apple puts a lot of effort into designing its laptops, its charger hasn't changed in years. You've got two options for plugging it into a wall: A long, rubbery cord that makes the charger significantly heavier, or built-in prongs that mean it connects to the wall at an awkward angle.

That's why Ten One Design decided to produce a deceptively simple yet genius adapter that lets the MacBook charger sit flush against the wall. By changing how the charging block plugs into your outlet and how it sits against the wall, the adapter cuts down on the likelihood of an accidental bump or movement displacing it. The adapter is $20 and it's on sale now, and will ship in June.

All users have to do is remove the standard MacBook two-prong adapter, and replace it with Blockhead's blue-colored side-facing version.

We got one for review at Business Insider and I've been using it to charge my MacBook Air for the past week. Here's what it's like: