The NDNS Chukka Boot is both practical and tasteful, an unsurpassable combination. With its supremely structured last, Memory Foam footbed, and non-slip outsole, as well as its waterproof leather, the NDNS Chukka Boot will far outlive its counterparts. Florsheim Mens Size Chart:. Sizes: 8.5 D, 8 D; Color: Black Leather. Gender: Male. Age Group: Adult.