Desso GrassMaster is a sports playing field surface composed of natural grass combined with artificial fibres, from the Dutch Desso group, known for their carpet. The artificial grass fibres are injected 20 centimetres (7.9 in) deep, and cover about 3% of the surface. While the grass is growing, the roots intertwine with the artificial fibres. The designers claim this anchors the field to create a solid, even structure with good drainage and 'playing comfort'.
Reinforced natural grass or hybrid grass is used for stadium pitches and training pitches, used for association football, rugby, American football, and baseball. Reinforced natural grass can also be used for events and concerts. The artificial turf injection shortens the recovery time for the grass.