Never Run Out of Grout Sponges with our X-Large Grout Sponge Bale 400 pcs. Always in stock and ready to ship, this bulk option is the ideal solution for busy professional tile flooring installers. Achieve flawless grout lines every time with our high-quality X-Large grout sponges, now available in a convenient 400-piece bale. Order now and take the hassle out of stocking up on grout sponges. Our extra-large grout sponge measures 7.5 x 4.5 x 2.2 inches. Information about storing grout sponges.