This is a great stencil for using with paint, or outlining with pencils or markers, for scrap booking, card making or other crafts, but I mainly use them for raised stencilling using plaster putty/wall compound.  They are nice and flexible.  An example of raised stencilling is in the attached photos.
 
Size:  B5 (Smaller than A4)
Measurements: 26cm x 17.8 cm (approx. 10.5" x 7")
 
The stencil can be used many times, just wash after use with soapy water and dry completely before storage.  It is best to store it in a flat position to avoid creases.