This innovative sheet protects your Sleepi?mattress (sold separately) from inevitable accidents and messy spills. The 3D mesh ensures optimal airflow while baby is sleeping. Compatible with Stokke Sleepi Bed V3 and Stokke Sleepi Bed Extension V3 (both sold separately) 50% polyester, 50% polyurethane Machine wash, tumble dry Imported OEKO-TEX?certified materials free of harmful substances This product meets Nordstrom Sustainably Sourced Materials criteria: contains at least 30% sustainably sourced materials