4 in 1 Household Boxing Ball Head-mounted Speed Training Reaction Ball Set

1. Material: PU / rubber / tennis / nylon2. Configuration: PU red / black ball + rubber ball + tennis ball + nylon black headband3. Weight: PU foam ball weight is 20 grams rubber ball weight is 80 grams tennis ball weight is 65 grams4. Size: rubber ball diameter 60 mm + black stretch line 1.8 mm tennis ball diameter 65 mm + black stretch line 1.8 mm red ball diameter 60 mm + white stretch line 1.2 mm black ball diameter 60 mm + black Elastic line 1.2 mm5. Small size not restricted by the venue6. The ball is light soft and safe7. Help training reaction agility punching speed