Full waterproof black technology Surface material: food-grade TPU waterproof membrane or high-density PVC coating, waterproof grade up to IPX8, effectively blocking water, foam and sweat penetration. Inner core structure: filled with high resilience memory sponge or 3D air layer, water does not absorb moisture, not moldy, to maintain a dry touch. Seam technology: full wrap-around high-frequency hot pressing technology, seamless fit to eliminate water seepage hidden danger, the service life of up to 5 years or more. Anti-slip safety design Bottom material: silicone particles anti-slip bottom or honeycomb suction cup structure, close to the tile, marble and other smooth ground, even if wet use is not easy to slide. Edge reinforcement: Thickened bumper design to avoid bumping and injury, especially suitable for families with elderly and children. Quick-drying and breathable system Breathable hole design: Hundreds of micron-sized breathable holes are distributed on the surface to accelerate the evaporation of water and prevent stifling heat and moisture accumulation. Removable Jacket: The outer layer is made of anti-bacterial quick-drying fabric, which supports machine washing and makes cleaning more worry-free.