we recommend a Graco crib mattress for the best fit). Exclusively manufactured by Storkcraft, proud licensee of the Graco brand within nursery and kids bedroom furniture. Storkcraft is a Parent Tested Parent Approved (Ptpa) Seal of Approval recipient, recognized for trusted quality and craftsmanship. Backed by Storkcraft s Customer Care team and a 1-year limited manufacturer s warranty. Assembly required.