Muslin is a finely woven cotton fabric, lightweight and breathable. In the baby world, muslins usually come as squares or larger swaddles. Their versatility is what makes them so popular:

• Newborn care: burp cloths, changing mats, comfort layers.

• Feeding time: covering shoulders, cleaning spills, or draping over when breastfeeding.

• Soothing: babies often grab, stroke, or hold muslins because they're soft and familiar.

This natural attachment is why many parents wonder whether it's okay for a muslin to be part of sleep.