These durable thick plastic stencils can be easily cleaned with soap and water after being used with paint, markers, chalk, pastels etc. All sets of stencils include both the positive and negative of the stencil, therefore 2 of each Geometric characters. Stencils can be used in a variety of different art projects. Set dimensions are 110mm x 90mm. Includes hexagon, pentagon, square, circle, decagon, rhombus, octagon, heptagon, rectangle, oval, semi-circle and triangle shapes.