Marks & Spencer M & S Collection. they say. M & S for Marks & Spencer. We often say Marks and Spencer's. But Spencer is singular. M & S Collection is one of their labels. The Grey Marl Jumper I looked up grey marl. Marl is a term referring to rock or soil, also meaning a flecked colour., eg of two twisted yarns (thick threads). For example white and light grey. To me it looks like a light grey. Yes, there are at least two shades of grey. A darker grey could be called granite. Grey, of course being a mixture of white and black. Sometimes you can see both white and black threads in knitted or woven fabric. Fabric and Material What is the difference between fabric and material. Fabric is fabricated, in a factory, man made, like polyester, as opposed to natural, or from a plant like cotton, or from an animal like leather, suede or wool, or a bird, such as feathers. But fabric is also created, fabricated, woven by hand. Material can be natural from the ...