Ventianni convertible crib goes through 4 stages of conversion growing along with your child from newborn to college. There are 3 mattress height settings and it can be converted to a day bed without any additional purchases. Toddler guard rail and full bed conversion kit are available for maximum functionality, longevity and value. Greenguard GOLD Certified | Tested for over 350 VOCs and 10,000 harmful chemicals Construction key facts: 100% Solid Hardwood construction. 5-in-1 Convertible to Day Bed (included) Toddler and 3 Full-bed options Adjustable Mattress support (three height positions) ASTM, CPSC and Greenguard GOLD Certified. Water-based and organic finishes and glues. ZERO formaldehyde or VOC emissions. Made in Europe with 100% European materials. All of our products are designed and tested to meet US standard size and CPSC requirements. Any mattress used in this crib shall be at least 27 1⁄4 by 51 5⁄8 in. with a thickness not exceeding 6 in.