Show only one rectangular kitchen sponge with rounded edges. Dual-layer: soft, porous yellow base and green scrub layer on top. Texture is slightly springy and detailed, with tiny holes and surface grain. No soap, water, hands, or background elements, no faces. Clean, natural 3D rendering, soft lighting, subtle shadows, transparent background, emoji scale, optimized for clarity, texture, and recognizability at small size. The style should be clean and natural 3D rendering with soft lighting and subtle shadows, optimized for emoji scale.emoji