standard crib mattress dimensions

BabyBjorn 2-in-1 Bassinet to Full-Size Crib - Cream

daVinci Margot 4-in-1 Convertible Crib

Beautyrest Black BreatheCool 2-Stage Standard Crib and Toddler 5.5" Hybrid Mattress with Greenguard Gold - White

Shnuggle Air Lite Bedside Bassinet | Infant Crib Height Adjustable Baby Bed with Mattress

Graco Teddi 4-in-1 Convertible Mini Crib with Mattress

Baby Relax Ema 3-in-1 Convertible Crib & Changer Combo

Child Craft London Mini Compact Folding Portable Crib with 2" Crib Mattress & 2 Easy Roll Locking Wheels, Durable Pine Wood Construction

Metal Smart BoxSpring Mattress Base with Quick Assembly Gray - Zinus

Baby Relax Ivey 3-in-1 Convertible Crib

Baby Relax Miles 5-in-1 Convertible Crib

FDW 8 inch Gel Memory Foam Mattress Wave Comfort Foam Mattress 8 inch Mattress, CertiPUR-US Certified,Removable Soft Cover,White

FDW Base Foam Mattress 8 Inch Mattress, CertiPUR-US Certified,Breathable Bed Mattress for Cooler Sleep Supportive,Removable Soft Cover,White

BaybyNest Crib Mattress 52x27.5x6 with Lyocell Cover - Dual-Sided Comfort, Breathable Gel Memory Foam Inner & Washable Cover, Fits Standard Cribs

Child Craft Camden 4-in-1 Convertible Crib, Converts to Day Bed, Toddler Bed and Full Size Bed, 3 Mattress Positions, Baby Safe Finish

Sealy Dreamlife 6" Foam Mattress

daVinci Twin Size Bed Conversion Kit (M12899) for Charlie Mini Crib and Changer Combo