The double-layer construction consists of two independent, high-resolution layers that provide greater sensitivity by distributing body weight and shape across multiple cells. The two layers are offset from each other, offering uniform insulation and cushioning. The Comfort Plus Range features the most effective adjustment system of all air mattresses to ensure maximum comfort. On uneven or soft ground, the lower layer of the mattress can be firmly inflated to provide stability, while the upper layer can be inflated with less pressure to maintain the mattress's soft and comfortable qualities. Air pressure can be easily and accurately adjusted using the multifunctional valve.