Figure 1 Hyperelastic - Neo-Hooke dialog box
•C10: The Neo-Hookean material parameter.
The initial shear
modulus 
is given by the equation:
•Strain Energy Density Function:
•Rubber Material Data:
•It is reasonable at low strains and the stresses are underestimated compared to Mooney-Rivlin in default coefficient.
Figure 2 Rubber - Neo-Hooke dialog box