Natural grass gets part of its rebound behavior from the soil layer beneath the grass blades. A good natural field provides controlled compression and rebound, rather than a hard or hollow response.

Vivaturf uses a closed-cell PE shockpad system with a closed-cell ratio of ≥98%. The cell size and distribution are engineered to provide uniform cushioning across the field. This helps support stable vertical rebound and reduces inconsistent bounce caused by uneven base softness or localized compression.

The shockpad works together with the fiber layer to create a controlled rebound profile, helping the ball react in a way that feels closer to natural grass while maintaining the durability and consistency expected from synthetic turf.

Key Technical Parameters for Natural-Grass-Like Ball Response

Vivaturf non-infill turf can be engineered to align with common European and North American performance expectations for sports surfaces, including FIFA-oriented football field testing concepts, EN synthetic turf performance expectations, and ASTM-based durability references where applicable.

Ball rebound ratio: 0.80–0.90
Natural grass commonly falls within a similar practical performance range. Vivaturf keeps rebound within a controlled window so the ball does not feel excessively dead or overly bouncy.

Ball rebound deviation across field zones: ≤2%
This supports predictable bounce in different areas of the field, helping players judge receiving, passing, and shooting movements with greater confidence.

Ball roll distance deviation: ≤5%
This is close to the stability expected from a well-maintained natural grass field and is significantly more consistent than many older infill systems affected by particle movement.

Surface friction coefficient: 0.60–0.80 dry condition
This range supports both player movement and ball interaction. It helps the surface avoid feeling too slippery or too resistant.

Wet-condition friction coefficient: ≥0.50
This helps maintain usable traction and more stable ball behavior after cleaning, rain exposure, or high-humidity conditions.

Vertical deformation: 5–8 mm
This range helps balance support and cushioning, avoiding both excessive hardness and excessive softness.

Shock absorption: 40%–55%
This provides a protective cushioning profile while maintaining enough firmness for speed, passing, and directional play.

Annual performance decline: ≤2% under controlled use and maintenance conditions
This helps maintain ball speed, rebound, and player feedback over long-term use.

Heavy metal migration: ≤0.3 mg/kg
TVOC emission: ≤0.22 mg/(m³·h)
Formaldehyde, benzene, and toluene: not detected
These environmental parameters support safer use in schools, clubs, training centers, and indoor or semi-enclosed sports environments.