Martin Sports Gymnastic Exercise Ball, Seamless Molded Vinyl

Balance work exposes what strength training can hide.

Some sessions skip core and balance work, while others put a ball in the room and make it part of every lesson.

Seamless Molded Vinyl: Made of tough molded vinyl with no seams. The surface stays smooth under hands, knees and backs.

Three Sizes, Three Colors: 24 inch blue, 34 inch orange and 37 1/2 inch red. A teacher assigns sizes at a glance by color.

Motor Skill Training: Made for indoor or outdoor motor activities. A child rolls over the ball and catches their balance on the other side.

Core and Balance: Sitting, rolling and bracing on an unstable surface trains the small muscles that keep the body steady.

One Tool, Many Lessons: Partner passes, stretches and balance drills all run on one ball.

Challenge the balance and the strength will follow.