Serta New - Serta Perfect Embrace 4" Mini Crib Mattress •FITS MINI AND PORTABLE CRIBS: This baby mattress fits most mini cribs and portable cribs; mattress measures 38"L x 24"W x 4""H (not designed for standard cribs or pack 'n plays) Measure your crib first to ensure a perfect fit•IDEAL SUPPORT FOR... $61.99 Was: $84.99 Was: Add to Cart