Woolen Tennis Ball
SPECIFICATION
| Construction | Hollow Core covered with felt |
| Material of the Hollow Core | Rubber |
| Material of the Felt | Woolen |
| Forward Deformation | 0.56 to 0.74 cm |
| Return Deformation | 0.74 to 1.08 cm ( Type 1 ) |
| Rebound | Not Applicable |
| Construction | Hollow Core covered with felt |
| Material of the Hollow Core | Rubber |
| Material of the Felt | Woolen |
| Forward Deformation | 0.56 to 0.74 cm |
| Return Deformation | 0.74 to 1.08 cm ( Type 1 ) |
| Rebound | Not Applicable |