Koyoju Plywood, which operates a wide range of businesses including sales of plywood, has developed Giraffenap, a small enclosure in which a user can nap while standing. The Hokkaido-based company says Giraffenap supports the user's head, shins and soles for a more restful respite. Working with researchers from Hokkaido University and other partners, the company proved that the device can keep users in a light state of sleep for at least 30 minutes. Because it prevents users from falling into a deep sleep, workers can quickly return to duty after awakening, according to Koyoju Plywood. The company says the device will mostly be used for 15- to 20-minute naps to reduce fatigue and stress.