Black Knight rail hi vis clothing at Work & Wear Direct. All Black Knight rail hi vis clothing can be printed or embroidered with your business name or logo and is suitable for use on or near the lineside, providing the safety and protection that rail workers need. Black Knight rail hi-vis clothing meets RIS 3279 TOM specifications. Browse the range of Black Knight rail high visibility clothing, or shop our other Rail Hi Vis Clothing available to buy online at Work & Wear Direct below.