Look at the bottom. The bottom back is hard, a fold feels broken is asphalt bottom back, if you fold 90° toughness is good, it is PVC, if you see is a layer of cloth, it is PU non-woven fabric.
Look at the surface material. The rough surface is generally made of polypropylene material, a little more delicate, and the color is bright for nylon material. Square blanket in general only polypropylene and nylon 2 materials most.
Look at the pattern color. What is the color of their own office environment, what color furniture, can be matched with different flower carpet. The gray and blue rugs are perfect for the furniture environment.