Constructed from 300g Kingsmill - Fabric, the Slate trouser offers extra strength and abrasion resistance. Winning features include, tuck away holster pockets, knee pad pockets, hammer loop and low profile branding. The mobile phone pocket is lined with anti shock - Fabric and will accommodate new smart phone dimensions. - Constructed from 300g Kingsmill - Fabric, the Slate trouser offers extra strength and abrasion resistance. Winning features include, tuck away holster pockets, knee pad pockets, hammer loop and low profile branding. The mobile phone pocket is lined with anti shock - Fabric and will accommodate new smart phone dimensions.