NEVER FLAT TECHNOLOGY: Our Serta Queen air mattress has 2 inflation pumps. One handles rapid inflation and deflation at the turn of a dial. The secondary silent air pump will allow you to set your desired firmness of the inflatable bed, and then if the bed loses air during the night the silent secondary pump will automatically turn on and retain your desired firmness. Here at Serta, we want to ensure you, or your guest gets a restful night s sleep! PREMIUM CONSTRUCTION: Constructed with heavy-duty waterproof puncture-resistant materials. This Air bed sits tall like a traditional bed, futon, or sofa bed. At 18" tall any guest should be able to get in and out of this guest bed with ease.