This crib is constructed from solid beech, offering strength and sustainability. The bed base is adjustable to two heights and one side can be removed when your child is able to climb in and out safely. The ventilated base promotes airflow for a comfortable sleep environment, while the robust materials have been tested to provide adequate support. Conversion kit is included, but mattress and linens are not. For safety, use only the recommended mattress size and lower the base as soon as your child can sit up unaided. Meets 16 CFR 1219 safety standards.