The parachute shall consist of three major components:  canopy made of orange/red coloured polyethylene film, cotton shroud lines and orange coloured plastic spreader hoop.  A spreader Hoop with elastic hanger of the parachute is designed to hang firmly Vaisala radiosonde unwinder under the spreader hoop.  It is not only easier to insert the hook of the unwinder into leastic hanger but also intended to avoid slipping it from the hanger.  More stable performance of the unwinder is expected.