The Mongrels ToughSider sole design principles have been applied to create soles to match each of our ranges. The balance between lightness and longevity in tough conditions have been computed to create soles with a unique ability to promote both comfort and durability. Features: Upgraded PU/TPU ToughSider sole PU Scuff Cap ZipSider Style Fully lined OrthoTec PU innersole AirZone comfort system Padded tongue and collar Steel toe-cap Type 1 AS/NZS 2210.3.2009 class 1 Sizes: 5 – 14 (6.5 – 10.5) Mongrel Zipsider Safety Boot