Presets internal air vents to discharge residual dampness and restrain mildew breeding after long-time outdoor placement.
Builds triple-layer waterproof frameworks to stop accumulated rainwater from permeating into the wrapped chair structures.
Mounts elastic clamping frames and fixed buckles to avoid casing structural fracture under powerful wind strikes.
Applies UV reflective paint on the outer layer to slow fabric aging reactions caused by long-term sunlight exposure.
Consumers receive 2 checkered-pattern casings of 89 X 99 X 78 cm in one official sales package.