2. Only one side of the back veneer is disposed with slots while the other side of the back veneer is an integrated and connected part. Thus the strength and support of the back veneer of the baby play yard mattress are improved. The mattress will not be deformed or turned up while babies stepping, walking, lying, or sleeping on the mattress. The babies are more comfortable and safe on the mattress.
2. The baby play yard mattress available now is mainly composed at least four plates assembled with sponge and fabric. When babies step or walk on the connection areas of the mattress, the plate is deformed, curved or turned up easily. Thus babies may feel uncomfortable or even fall down and get hurts.