Over or Under Top Sheet: whether you choose to sleep with the pad on top of your mattress or over your top sheet, the pad is designed to be effective and comfortable. Thick Quilted Cotton Top Layer: the unique 4 layer design is complete with a super soft quilted top that feels great; soft and comfortable; pad is not bulky or too thick, so it cannot be felt while sleeping. Better Choice for Your Home: save money with our reusable pad that has been tested up to 300 washes; no more expensive and wasteful disposable pads; plus, you can be assured you are buying a great option for your homecare needs; pads have been given the Confidence in Textiles label, and have been tested for harmful substances according to OEKO-TEX Standard 100 free; perfect for children, adults and pets. Slip Resistant Backing: featuring unique tucktails that tuck seamlessly under the mattress, the pad is designed to stay in place overnight; no more uncomfortable adjusting, even for the most active sleepers. Leak Proof Design: 1 pack; our pad can hold up to 8 cups of liquid, much more than others; moisture is quickly absorbed into the pad and then dispersed throughout, helping to prevent leakage; also features leak proof edges, resilient inner layers and a thick waterproof barrier to offer additional, unparalleled protection that will give you the comfort and security you need.