Wirecutter

If you want something that’s easier to put on and take off the bed, the Priva Ultra Plus outperformed other mattress pads we tested.

TechGearLab

When you know you need to protect your mattress against accidents, the Priva waterproof pads are the ideal choice. This absorbent pad lies on top of the sheets for the most straightforward cleanup after ill-timed accidents and might more so be used in anticipation of a messy situation rather than for daily use. They are wonderfully easy to clean — just pop one into the washer and put down a second one; no need to clean all the sheets. This pad easily soaks up an astonishing amount of liquid while still feeling relatively dry, making it ideal for larger leaks. Since this pad lies on top of the sheets, it's a great choice to take on vacations with kids still being potty trained or for putting on the couch for your elderly dog who lacks total bladder control. 
However, because it is resting across your top sheet, it can also move around as you sleep, potentially bunching up on one side and allowing accidents full access to your mattress. It's best to use a size or two larger than the area you're hoping to cover. For extra protection, consider pairing it with a traditional mattress protector. Because its surface is 50% cotton/50% polyester, it may also hold onto stains. However, its vinyl backing and sturdy construction make it the only option we tested that can be bleached. Despite these shortcomings, when you're expecting an accident, the Priva is our top choice for minimizing the effects.
Health rating: None

Bedwetting Sheets Comparison