Pod, he says, takes that data and uses it to actually improve your sleep. Even at $2,135 for a queen, the Pod sold out in just 15 days when it launched in Feb­ruary. —Alejandro de la Garza Buy ...

The latest model, the Eight Sleep Pod 4, was released early this year. It offers a few significant improvements over the previous model, but the biggest one is how it can be controlled.

Koyoju Plywood came up with the project after it learned about a patent for an upright sleeping pod held by Tokyo-based office furniture supplier Itoki Corp. during a business matching event ...