- Overall Length - Head to Toe: 52''
- Mattress Fill Material: Cotton
- Hypoallergenic: Yes
- Antimicrobial: Yes
- Serta’s Perfect Sleeper Deluxe Crib Mattress Pad has a 100% cotton quilted top for extra comfort and softness for baby. The 100% waterproof underside protects mattress from liquids. The generous elasticized corners provide a snug fit on most standard size crib mattresses to prevent shifting and sliding.