Low Height Design: Perfect for taller mattresses or those who prefer their bed lower to the ground, this twin size bed frame is only 4.6 inches from the ground. It can accommodate mattress thicknesses ranging from 6 to 12 inches. The low height design is especially convenient for families with young children or pets as it allows them to easily climb up and down the bed. And you don't have to worry about your baby falling off the bed as the low height greatly reduces the possibility of injuries.