Every essential item eventually becomes wearable.

From spectacles being a handheld lens, to being worn on the face. Everything people need eventually becomes something worn on the body. 

In future, if technological progress continues as is & resources do not deplete, I can imagine impenetrable exoskeleton suits that would be as comfortable to sleep in as the are rugged in harsh environments that could supply the body with nutrients by photosynthesis through perovskites or other technology. Maybe the human body itself would've been engineered to have photosynthesis-capable cells, eliminating the need for energy in the human body. The exoskeleton suit could make walking, running & jumping easier as well as have night vision fitted on a retractable helmet. This exoskeleton suit would be collision & bulletproof along with being impenetrable to all animals. Maybe a self-cleaning or a  bacteria & odour eliminating function. It may even be fitted with an underwater breathing mechanism as well as a gas mask mechanism.

Seeing some videos on the internet has made me believe that such a thing could very well be possible in some time. We need food & shelter, someone might make devices we could wear that would eliminate the need for food & shelter.