GREENGUARD Gold Certified: This product has been tested for over 10,000 chemicals. It contributes to cleaner indoor air, creating a healthier environment for your baby to sleep, play and grow | GROWS WITH BABY: 4 adjustable mattress positions that can be lowered as your baby begins to sit and stand. Easily converts to toddler bed, daybed and full-size bed (toddler kit M3899 and full-size kit M4799 sold separately) | QUALITY MATERIAL: Made of solid sustainable New Zealand pine wood. Finished in a non-toxic multi-step painting process and lead and phthalate safe | FOR YOUR BABY'S SAFETY: Say goodbye to toxic chemicals. Finished in a non-toxic multi-step painting process and lead and phthalate safe | MATTRESS COMPATIBILITY: While this crib is a standard size regular crib, for a best fit we recommend DaVinci’s line of non-toxic, GREENGUARD Gold, waterproof mattresses