In June 1783 they had their first public demonstration. They constructed a globe-shaped balloon of sackcloth with three thin layers of paper inside. The envelope had an 11mt diameter; it could contain nearly 800 m³ (28,000 cubic feet) of air and weighed 226 kg (500 lb). Its flight lasted 10 minutes, had an estimated altitude of 1,600-2,000 m (5,200-6,600 ft) and covered 2 km (1.2 mi). For the following experiments they tied a basket to the balloon and sent the first (non-human) living creatures: a duck, a sheep and a rooster.
The Montgolfier brothers’ balloon ascended due to a wood stove that was settle in the basket, the procedure was very simple: the oven heated the air and the balloon ascended.
One year later, Pilâtre de Roziers along with Marquis d’Arlandes were the first to ascend into the air; to celebrate the success of the flight they had a champagne toast after landing. From then on the tradition of celebrating a balloon ride with a toast remains.