POTTERY BARN BABY COLBY ORGANIC CRIB FITTED SHEET (NWT) 27.5 in x 52 / 70 cm x 132 cm CONTAINS 100% ORGANIC COTTON PERCALE OEKO-TEX® CONFIDENCE IN TEXTILES STANDARD 100 Crib fitted sheet has elastic around the top and bottom only (rather than the entire edge) for added safety. 200-thread count. Machine wash. Organic fibers aren't treated with pesticides, insecticides or herbicides, and they conserve more natural resources like water.