- Overall Length - Head to Toe: 52''
- Mattress Fill Material: Polyester
- Hypoallergenic: Yes
- Infants need a firm foundation and Serta’s Nightstar Deluxe Firm Crib & Toddler mattress provides the support essential for a good night’s rest. Include full perimeter border support for long-lasting stability air vents that help the mattress breathe and keep it fresh and a waterproof vinyl cover for easy cleanups.