 Based on article 5 of the treaty, 

Maria Theresa ceded most of Silesia with the County of Kladsko to Frederick, except for those districts of the Duchy of Troppau that were located south of the Opava river, including the southern part of the former Duchy of Jägerndorf, the possession of which had been one pretext for Frederick's invasion.The Duchy of Neisse held by the Breslau bishops was also partitioned, with the fortress-city of Nysa and the larger northern portion of the territory falling to Prussia.Austria retained the entire Upper Silesian Duchy of Teschen, ruled by Maria Theresa's husband, Francis Stephen of Lorraine, Grand Duke of Tuscany.