Top training for building forearms and grip strength;Two piece ball kit includes: 2.5 poly resin textured balls (tennis ball size), with hanging steel bolt, triangle safety carabiner, and 7.5 length x 1 polyester webbing sling;B4Adventure NinjaLine Premium Accessory;Ages 5+; Max weight 250 lbs;Endorsed by The Ninja Brian Arnold

• b4Adventure NinjaLine Ninja Ball with Hardware (2 Piece), Red/Blue, 2.5
• 2.5"
• Red/Blue

b4Adventure NinjaLine Ninja Ball with Hardware (2 Piece), Red/Blue, 2.5Brand 44