Materials | Leather - Foam PVC | ||
Bladder - 50% butyl, 30% butyl or natural rubber available | |||
Environment-friendly, 6P free, EN71 | |||
Layers | 3 layers, 4 layers | ||
Standards | |||
Roundness error | Rebound | Impact test | |
≤1.5% | 53cm-61cm | 5,000 times | |
Sizes | 5#, 4# |