A "puddle pad" is a protective cloth or mat that is used to prevent liquid spills or messes, like spills from babies, pets, or drinks, from spreading or seeping into the surface below. Full definition
To protect the wool mattress from nighttime diaper leaks, I got a natural wool puddle pad from LittleBunnyBear. (thefashionablehousewife.com)
Protect your mattress, your cosleeper, your Dock - A-Tot and more from leaks with an all natural wool puddle pad from LittleBunnyBear. (thefashionablehousewife.com)
Another use for puddle pads is for elderly adults who may have difficulty with mobility and need a bit of physical assistance. (best-mattress-reviews.com)