Soft sheets for sweet dreams. Made to fit the unique shape of the Stokke Sleepi Mini Mattress, this sheet offers ultimate comfort that's gentle to your newborn baby's delicate skin. It is elasticated all the way around to ensure a snug fit for safer sleeping. It is Oeko-Tex Standard 100, class 1 approved and certified free from hazardous substances with the latest research and technology governing what's best for your baby.