Intex’s Comfort Top Beds with Built-in Battery Operated Electric Pump. These airbeds are constructed with a unique electronic welding technique that interconnects welds running both the length and width of the airbed. This helps minimize sagging, dipping, lateral sway and the ‘see-saw’ effect common on less expensive mattresses. The plush, waterproof flocking covers the mattress top and sides for a more luxurious look and feel.