IMPROVE BALANCE AND STRENGTH: CanDo Inflatable Donut Balls improve core strength, balance, coordination, and flexibility.

USE BY ANYONE ANYWHERE: Flat side provides stability while sitting on the exercise ball, but while exercising it adds instabilty to engage stabilizing muscles to increase fitness effectiveness.

PERFECT SIT-UP TOOL: Unique design allows user to add additional resistance to workout by holding the donut stability ball between their leg.

FIVE COLORS and SIZES: Available in 5 color-coded sizes for Adults and Children.

PROFESSIONAL GRADE DURABLE DESIGN: Non-slip latex-free Durable PVC material supports up to 300 lbs.