Large 4" x 6" applicator pad (2-pack).
 
Made of sponge foam covered with cotton.  They can be used to apply all sorts of liquid stains, oils, and even waxes.  The applicator absorbs a generous amount of product to work a large surface area without having to reload.  These are ideal for small or medium, flat or textured surfaces.  Before applying Fusion Tough Coat Matte Wipe-On Poly, slightly dampen the pad (wring-out excess water).