Underpads, commonly referred to as "chux," are disposable, single-use absorbent pads designed to protect bedding, furniture, and other surfaces from moisture, spills, and incontinence. They typically consist of a soft top layer, an absorbent core (often made of fluff pulp), and a waterproof plastic backing. Underpads come in various sizes and absorbency levels, from light-duty for minor spills to heavy-duty for significant fluid containment. They are widely used in hospitals, nursing homes, and home care settings to manage incontinence, absorb wound exudate, protect surfaces during medical procedures, or for baby changing. While designed for single use, their convenience, hygiene, and effectiveness in preventing cross-contamination and protecting valuable surfaces make them an indispensable item for patient care and environmental cleanliness.