Ophanie Twin Size Fitted Mattress Protector - Waterproof, Breathable, Noiseless, Fits 6"-14" Deep Mattresses, White, 75" x 39"

This pad fits well and keeps safe the actual material on the mattress. You can see it has plenty of stretchy material along the sides to slip over the mattress without a struggle. We double protect, and this is the insure part. We have another thicker pad over before the bottom sheet. I remove the sheet weekly to wash. Occasional spill will require the pad to be washed. If liquid penetrates top pad, this one makes no worries.