Light, 100% cotton, open weave fabric allows constant air flow allowing babies temperature to adjust naturally. Comfy - Our fabric is designed to become softer each time it is washed. Large Each Swaddle is large enough to be used as a pram cover, burp cloth, tummy time blanket, nursing, and much more. Teamed with the Original pram peg, Pram pegs are a great way to keep the muslin attached to the pram, protecting little one's when out and about.