It has four (4) levels of mattress spring adjustment to adapt to your little one's growth. (babycribfinder.com)
The Southern Dunes Crib is a sturdy crib that features steel mattress springs, static sides and 3 adjustable mattress positions for your growing baby. (simplybabyfurniture.com)
This crib was built strong with solid pine wood and finished in a non-toxic White and comes with added safety features such as a 4 level mattress spring system that allows you to adjust the mattress height to your child's growing height. (simplybabyfurniture.com)