The Delta Children Bennett Wood Toddler Bed and Twinkle Stars Dual Sided Crib and Toddler Mattress bundle allows you to transition your child from crib to toddler bed. The Bennett Toddler Bed features a transitional style design with sturdy wood construction, guardrails for safety, and a low profile for easy access. It fits a standard full-size crib mattress up to 55.25 inches wide by 30 inches deep. The Twinkle Stars Dual Sided Mattress has a firm polyester fiber core made from recycled plastic bottles and a waterproof vinyl cover that's easy to clean on both sides. At 27.5 inches wide by 52 inches long, it fits neatly inside the toddler bed. This 6-inch thick mattress is GREENGUARD Gold certified for low chemical emissions and meets safety standards for flammability, lead, phthalates and CPSIA. With square corners for a snug fit and lightweight design, this mattress combination makes it simple to transition your child to a "big kid" bed.