Ensure a sound night's sleep even when accidents happen. Newton's mattress pad adds a layer of cool and ultra-breathable comfort to cribs, thanks to an innovative breath-through material that wicks moisture away from baby's skin. A waterproof lining protects the mattress from moisture, so leaks are no big dealjust remove the pad and toss it in the wash.Newton Baby Waterproof Breathable Crib Mattress Pad 6"H x 28"W x 52"D Measurements are in inches.