Cotton and Muslin, biggest size design.
Length: approx. 100cm/39.3"
Width approx 70cm/ 27.5".
The different between Muslin and Cotton:
Muslin Nursing Covers are the lightest and most breathable breastfeeding covers available. Made of open-weave cotton Muslin, they're perfect for hot Summer days or for moms and babies who get warm easily.
Cotton Nursing Covers are less Light transmittance than Muslin ones.