The Hide we used for the Eagles had been insulated and then lined with timber there was a small Spirit Heater which was much needed, There was a canvas screen with a drawstring to put your Lens through this was then tied from the outside by the Guide so you could not be seen by the birds this also stopped you changing Lenses which avioded disturbing the birds. The Chairs in the Hide were covered with a Riendeer Hide which is extremly warm, The only view you have of the area in front of the Hide is through a small slot covered with dark glass or through your camera. All well thought out so there is no disturbance to the Birds.