Avi Sandal Avi Sandal Leather upper with manmade sole. Imported. Ankle buckle closure. Leather lining. Padded leather insole. Square toe with kitten heel. Approx 70mm/ 2.75 inch heel. TONR-WZ618. AVI. Based out of Australia, the Tony Bianco brand embraces a mix of the contemporary, the classic, and the cool. Their signature can be seen in the use of high quality materials and a keen eye for detail that is used to create on-trend pieces that will survive the test of time.