Product Performance: The product is made by a special process with a bright color and monochrome,multi-colors. good tensile force,strong resilience . aging resistance,good tensile strength etc.Product Material: 100% pure natural latex imports of processed latex tubes ,EVA foam handles high-level.Product Testing: Product testing by SGS,with non-toxic no side effects,can be used at ease.Model: This product is in accordance with sub-tensile strength: soft,medium,heavy,extra heavy four kinds.