97% Cotton, 3% Spandex. The spandex gives it a very slight stretch across the width, which adds a bit of a "hug" without adding any bounce. The result is a supportive, comfortable fabric that's terrific for newborns to toddlers. It is thicker than French twill or linen, and may not be ideal for very hot or humid climates; however, if you live in such a region but do most of your babywearing in the air conditioning, it would be fine. Large rings and the retro SBP pleats are standard due to the thickness.

Click on the swatches to enlarge

Machine wash cold, tumble dry low or hang to dry. Your sling will be cut a few inches longer than specified to accommodate any possible shrinkage.