Self adhesive foam and acetate sheets. 8.5x11 size sheets. Foam is 2mm thick. Each package includes 4 sheets of self adhesive foam and 4 sheets of acetate. *Please note: this foam is 1/2 as thick as our pre-cut shaped refills. If you are creating a shaker with dimensional toppings, you may need to layer two pieces of foam you cut from the refill sheet together to get the shape thick enough to hold the toppings correctly.