We love this natural alternative to fleece! Raw silk (also called Silk Noil) retains some of the silk's natural sericin (a creamy wax given off by the silkworms) which is both soothing and antibacterial! Great at pulling moisture away from your baby's skin and keeping their bottom healthy and dry. Our serged rectangular shaped liners are 2 layers and measure 4 1/2 x 10 inches (size 1) or 5 x 12 inches (size 2).