The Omnipedic Staph-Guard Mattress from Kolkraft comes with an unconditional lifetime warranty and it is made exclusively for USA BABY! It features a 2 stage system, a foam side for your newborn baby and a coil side for your toddler 20 pounds and up. The staph guard cover features the same potective fabric used in hospitals. The extremely safe surface resists bacteria and germ growth. It is waterproof, no mattress pad required. The square corners insure a tight fit that helps keeps sheets on tight and prevents little hands and feet from getting caught. The toddler side features a 6 guage interior and exterior rod for additional support where your child sleeps and on the edges where they stand. This mattress in non-allergenic and meets all safety standards.