The Sarcophagus of Restful Sleep is a mystical bracelet with a circular button that, when pressed, envelops the wearer in a transparent fabric, rendering them temporarily paralyzed. The wearer remains aware of their surroundings and can communicate.

 Inside, short rests take only half an hour, and long rests can be completed in four hours.

 Moreover, the sarcophagus is unbreakable, offering complete safety to the person inside, shielding them from any danger. It floats three feet off the ground and can be easily moved. 

 It's important to note that the sarcophagus cannot be opened before the designated time of either half an hour or four hours, ensuring the restful period is undisturbed.