Prevail Underpads are designed to provide extra protection against leaks for beds, chairs, and other surfaces. They add an additional layer of security, particularly for those with heavy leakage. You can even choose from a range of sizes and absorbencies to meet your personal needs. - 23 x 36 inch underpad. Soft, absorbent and durable when wet. Fluff layer to quickly pull and lock up liquid. Extra strong construction. 150 underpads per case.