The open weave in muslin cotton is what makes it work for both air conditioned rooms and hot streets. Air passes through the gaps in the weave, so heat doesn't build up against your baby's skin the way it can in tighter fabrics. That same airflow works in reverse when you step into a cold room, since the fabric doesn't hold onto damp warmth from outside. One good muslin piece can carry your baby through several temperature changes in a single afternoon.
Our clothes are double layer muslin cotton, pre-washed before they reach you, so they're soft from the first wear instead of stiff and scratchy. The seams are sewn flat, which matters when a baby is going in and out of a car seat or stroller all day long. We skip harsh finishes and use dyes chosen to be gentle on kids. Wash on a cold, gentle cycle and skip the fabric softener: it coats the weave and cuts down on the airflow that makes muslin useful in the first place.
If you're unsure whether your baby is too warm or too cold, touch the back of their neck or their chest, not their hands or feet, which run cooler naturally. Pack one spare layer when you head out. A stroller ride from a cool apartment to midday heat can call for a change halfway through, and muslin dries fast if it picks up a little sweat. Our sizes run from newborn to about 4 years, and creases in the fabric are normal, not a flaw. If something stops fitting or doesn't suit your climate, we take unworn returns within 30 days, with tracked shipping worldwide.