Blundstone 510 100% Leather Imported Synthetic sole Weather-proof leather 2.5mm thick with Shock protection system (SPS) The size on the shoe is the AU Size, Please refer to the size chart for conversion Removable comfort footbed Anatomical design, removable Cambrelle comfort footbed wicks moisture away, SPS (Shock Prevention System) reduces shock by 33%, upper is seamlessly fused to PU outsole, dual density outsole for softer walk The sizes available in drop down are for US Men's, refer sizing chart for Women's