I researched crib mattresses for quite some time through various websites using the advice found on consumer reports regarding crib mattresses. This is a Sealy crib mattress which is sold under the name Kolcraft, and here is a more accurate description of the mattress:
Exclusive POSTURETECH® coil system offers 220 POSTURETECH® coils for long-lasting support
Everedge® Pylons at each corner of the mattress create ultimate corner support
STAPH-GARD® reinforced cover effectively inhibits bacterial growth and provides an anti-static surface
All-around heavy gauge steel border rods maximize side, corner and edge firmness
Steel bars distribute baby's weight evenly over the entire surface of the mattress
Two non-allergenic layers insulate the mattress for lasting durability
Third non-allergenic layer provides additional support
Fourth non-allergenic layer offers a plush, gentle sleeping surface for your baby
GREENGUARD® Children & Schools Certified: This entire mattress is GREENGUARD® Children & Schools certified for indoor air quality and low chemical emissions to help create a healthier sleeping environment for your baby
Voted Americas Best Brand for Baby! Sealy crib mattresses and pads earned the Womens Choice Award for 2013.
STAPH-GARD® woven jacquard fabric covers offers liquid, stain and allergen resistance
Fabric cover feels soft, no plastic waterproof coating is used!
Mattress also fits toddler bed frames
Lifetime warranty on workmanship and materials
Entire mattress is phthalate and flammability compliant and does not contain toxic fire retardants
Proudly made in the USA
Also what most sites don't tell you is that not only is the number of coils important, but the gauge of the steel. This particular mattress has 15 gauge steel POSTURETECH coils to provide a firmness and long-lasting support.
I have not yet placed my baby on this mattress, as she is not yet here. I have felt many mattresses in different stores, and this was my favorite. i will give a follow-up review after my baby has slept on it a few months. I was torn between the Sealy Baby Posturepedic Crown Jewel Crib Mattress and this one, but found out through calling Kolcraft that this mattress is the newer version.
I am very satisfied with this mattress, and can't wait for my precious baby to sleep on it!!