- Overall Length - Head to Toe: 53''
- Mattress Fill Material: Cotton
- Hypoallergenic: Yes
- Antimicrobial: Yes
- Organic: Yes
- The removable surface layer of the nook pebble pure mattress employs a patented asymmetrical design and nano-level technology to maximize breathability. Air flows in valleys between pebbles creating an oxygen-rich crib environment while surface fibers with nano-technology prevent liquids from seeping into the mattress for easy-wipe clean up. When it's time for a nursery makeover just unzip the pebble pure wrap and swap colors. For use only with the pebble pure mattress.