Bormioli Rocco Fido Square Jar with Blue Lid, 33 - 3 / 4 Ounce Set of 4 Includes 1 liter Bormioli Rocco Glass Jar Made in Italy Bormioli Rocco Fido Glass Storage Jar with Airtight Clamp They are heavy, made from thick glass which can handle the heat of the canning process Made from clear italian glass and Stainless Steel Clamp Bpa free, made in italy