Throwing Indoor Training Discus Javelin Soft Plyo Balls

Indoor training balls for javelin throw and discus throw - 1k, 1.5k, 1.6k and 2k ball have some give with rubber coating; ranging from 3 to 3.5 inches in diameter. Great grip for discus and javelin throwing indoors into a wall or net. Highly recommend to teach beginners how to throw.