When the heel air bag is under the pressure of the foot the air valve and transmits gas to the inside ensuring that the two air bags at the arch are saturated in real time and keeping the shoes breathable and dry at all times.Gas mechanics conforms to the walking posture of everyone and fits the foot shape.When walking, the internal gas circulates and disperses the pressure,so as to achieve the effect of buffering shock absorption and decompression. Effective decompression more than 30%. When the 3D insole is lifted and stepped on, the air convection in the upper space is infinite breathable and circulates, so as to keep the feet away from sultry and humid,thus improving the environment of sweaty feet and effectively keeping feet away from odor.TPU environment-friendly fabric is adopted, and far-infrared ceramic powder is implanted on the surface of Lycra cloth, which is easy to deform after long-term wear, good air permeability, and keeps feet dry and comfortable at all times. Lycra elastic cloth has a soft feeling similar to silica gel, delicate touch repeated cleaning, durable, effective antibacterial and deodorization further improving the self-cleaning function of the insole.