Type: Pressurized for tournament Approval: International Tennis Federation (ITF) Approved Description: Extra duty; High visibility; Playne’s woven cloth Content: 70% wool Deformation: 0.23~0.26 inch Rebound: 140~145 cm Weight: 56.5~58.5 g Size: 65.5~67.5 mm Packing: 3 balls (Q1) in Can Suitable for all court Type: Pressurized for tournament Approval: International Tennis Federation (ITF) Approved Description: Extra duty; High visibility; Playne’s woven cloth Content: 58% wool Deformation: 0.23~0.26 inch Rebound: 140~145 cm Weight: 56.5~58.5 g Size: 65.5~67.5 mm Packing: 3 balls (P3) in PET Tube Suitable for all court