Take The Pressure Off Bubble Pad With Flaps * Replacement App Pad To Be Used With The Blue Jay App (alternating Pressure Pump) Model Bj145720 Or Similiar App Pumps * Can Be Used For Both Hospital And Home Care Use * 130 Air Bubbles * Designed To Be Placed On Top Of An Existing Mattress * 15.7 End Flaps Wrap Underneath The Mattress For Increased Stability * Durable Heavy Guage Premium Medical Grade Pvs * Inflate Pad Size: 78.7 L X 35.4 W X 2.8 High *