System with a versatile multilayer textile assembly for covering a sleep platform

A transportable sleep system comprising:

• a transportable sleeping platform;
• and
• an adjustable covering for the transportable sleeping platform for a user, wherein the adjustable covering comprises:
• a multilayer textile assembly having a longitudinal axis and a transverse axis for conformingly coupling to the transportable sleeping platform comprising:
• a first textile layer comprising a first textile piece with a contact surface that faces away from the transportable sleeping platform during usage for sleeping and a sleeve top surface opposite the contact surface;
• a second textile layer comprising a second textile piece with a sleeve bottom surface that faces away from the transportable sleeping platform when coupled to the transportable sleeping platform and a moisture barrier surface that faces toward the transportable sleeping platform when coupled to the transportable sleeping platform, wherein:
• two longitudinal edges of the second textile layer are respective coupled to two longitudinal edges of the first textile layer to form a sleeve for receiving a third textile layer, when present, through one or more sleeve openings between one or both transverse edges of the sleeve top surface and the sleeve bottom surface;
• and
• the second textile layer is shorter longitudinally than the first textile layer;
• and
• a fourth textile layer comprising one or more envelope enclosures configured to foldably enclose the one or more sleeve openings along one or both of the transverse edges of the sleeve formed between the first textile layer and the second textile layer.