The chasuble is the liturgical vestment of the bishop and priest, worn to celebrate Mass. The two chasubles of Atto presented and described in the contribution are mentioned by Manetti, Dondoli and Vitoni. Vitoni reports the description provided by Monsignor Colombino Bassi, who carried out the survey in 1717. The first artefact has undergone various modifications and maintenance over the centuries: patches, ugly stitching, withdrawals, restrictions, perhaps already carried out since the 1337 reconnaissance. The second is made of a three-body worked velvet woven in Florence within the third decade, or a little later, of the 15th century. The contribution analyses the characteristics and transformations of the two liturgical robes from their manufacture to the contemporary age.