An air pump provides sequential inflation and deflation of the air cells throughout the mattress forming an air channel up and down in the mattress to redistribute pressure. The air pump is heavy duty for long life which operates quietly, vibration-free and energy-efficient. The mattress can be placed overtop an existing mattress. It is light weight, portable and easy for transportation. It is ideal for use in home healthcare or nursing homes. Tubular mattress system is ideal for patients with severe bed sores and heavy weight, it is designed for better body comfort, air-cells are deeper with better support for body pressure. The mattress is more durable and longer life. Individual cells can be replaced instead of complete mattress.