. Light: Polypropylene is the main raw material; Specific gravity is 0.9, is only third five, fleecy and touches well. 2. Flexibility: Made up of microfiber (2-3D), DOT by DOT thermo-melt formed. Flexibility of products is suitable, comfortable. 3. Water resistance and breathability: Slices of Polypropylene and finished products resist water, breathable and easy to maintain and wash. 4. Non-toxic, non-irritating: Made of materials which catch up FDA standard, without other chemical composition, stable, non-toxic, no smell, safe for sensitive skin. 5. Anti-bacterial, anti-chemical: Polypropylene is blunt chemical substances can protect in liquid from bacterial and insects; Antibacterial, alkali corrosion, erosion and the finished product will not affect sensitive skin.