Updates to the Bondi 9: upgraded underfoot cushioning with supercritical foam, an added 2 mm of stack height, retooled collars, and knit uppers for a more accommodating fit. Foot Length (in.). 9.06 9.2 9.4 9.56 9.7 9.875 10.1 10.2 10.4 10.5 10.7 10.9 11.1 11.2 11.375 11.6 11.7 11.9 12 12 12.4 12.4.