Ragnhild Lübbert Terpling Urban Sleeper

The Terpling Urban Sleeper is one of the only fully folding, free standing, self-contained designs currently in existence.

Its convenient design allows for the unit to be packed up within a matter of seconds if required.

The structural poles for the design are built in and none-removable but I can’t help but feel that there would be more structural integrity if the poles were angled and met at the top of the frame.


  • Compact Design
  • Freestanding
  • Large front opening
  • No assembly required
  • Contained structural elements
  • Fully Waterproof
  • Design allows for excess water to drip off naturally. Plenty of ventilation will prevent mildew forming.


  • Due to folding design it’s harder to build in a roll mat
  • Limited visibility top and behind
  • Lack of ventilation
  • Hot in summer
  • Could collapse (domino effect) under high winds/rain
  • Not kept taught length ways
  • No mosquito nets

Initial Design and Scaled Prototype

© Ragnhild Lübbert Terpling

Bag Features


Urban Sleeper Bag Design Concepts and Features
Urban Sleeper Bag Design Concepts and Features

© Ragnhild Lübbert Terpling

Finished Design

Ragnhild Lubbert Terpling Urban Sleeper
Ragnhild Lubbert Terpling Urban Sleeper

© Ragnhild Lübbert Terpling



Urban Sleeper - Animated Assembly© Ragnhild Lübbert Terpling

Design Improvements

  • Increase length one more section to allow for ‘porchway’ or place where belongings can be stored out of the elements. Allow occupant to keep food, shoes and clothes outside but covered.
  • Have two doors, one to outside, one to sleeping quarters. Inside door top hanging ‘U’ shape flap to prevent dragging in the floor.
  • Add a ‘U’ shaped top hanging door as part of the outside door which has side flaps (which stay on the outside) so that if it’s raining outside then water is prevented from coming inside.
  • Add a 2nd frame member next to the first one which can be folded down to the floor and clipped to the inside of the front door to extend porch area.
  • Add pouch for rolled up and detachable mosquito net. Place at inside top of first frame.
  • Add a ‘U’ shaped door to entrance of sleeping section to avoid having to climb over all your stuff to get in and out of the living quarters.
  • Add numerous plastic windows which can be velcrowed up for privacy.
  • Put two ventilation holes at top of living area where head would be, cover up on outside using a second cover. This second cover is secured on the outside of each frame support. This ‘flap’ can be rolled up and secured during dry nights for extra ventilation and/or to look up to the sky, or can be kept secured down in cold and/or wet nights.
  • Add a tag at each end of the tent to allow for a self-assembled, overhead cross pole (like the folding tent poles) to be put in place to secure the sleeping pod lengthways and provide additional stability to the structure. Important under heavy rain, it will prevent the outside shell from touching the occupant and prevent collapse.
  • Add guy rope supports for public purchase.


Further Reading / Resources

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