Mongrel Boots are the originators of the zip side style of work boot. First introduced in 2006 with just one style, Mongrel ‘ZipSiders’ are now category leaders in Australia. The Black High Leg ZipSider Boot is available in both safety and non-safety and features a YKK zipper, temperature regulating lining and an OrthoTec PU foot bed for correct arch support. Also featuring our renowned Air Zone Comfort System, a padded tongue and collar, Coats Nylbond stitching and a slip, oil & fat resistant TPU/PU Tough Sider sole.Made in Australia. Certified to Type 1 AS/NZS 2210.3.2009 class 1.