Bartlebee was an adventuring mage famous for his vast arcane knowledge, his poor constitution, and his tendency to be attacked while sleeping. He eventually crafted an enchanted sleeping bag that was so handy his fellow adventurers cajoled him into making more.
The bag is made of a woolen rug folded over and sewn along the 'bottom' with frog fasteners along the long side; a person lays within the rug and fastens it closed. The person is warm and snug but may open the bag very quickly in an emergency.
If the command word is known once fastened the bag will drift up 8' off the ground and enter a dimensional pocket very similar to a Rope Trick spell. The interior is shielded from wind and rain but allows the person inside to hear what is going on around them and to see through a 2' x 2' one-way window that looks down from where their head rests. It takes 2 segments for the bag to rise and enter the space.
Note: if a ceiling or other obstacle blocks the bag from rising to a full 8' it will still enter a pocket space as long as it can rise at least one full foot from the ground.
The space will be within a few degrees of the ambient temperature, but the bag itself is enchanted to make its occupant comfortable if the ambient temperature is between 111 to -11 Fahrenheit.
If the occupant of the bag is awake the bag will exit the space in 30 minutes. If the occupant falls asleep within 30 minutes the bag will remain in the space for 8 hours of until 5 minutes after the occupant awakes, whichever occurs first. The bag may be used no more than once a day (from sunrise to sunrise) and no more than 3 times in a week (a phase of the moon).
The bag can hold a creature of up to the size of a large half-ogre but is generally limited so that only a single humanoid and its familiar/a single small animal can be in the space along with a single large, loaded backpack.
When the bag 'turns off' it takes 2 segments to exit the space and float down. In a rush, the occupant can unfasten the bag and leap out in a single segment - the bag and any gear will fall to the ground immediately if this is done.