31831Ball Stabilizer Basehttps://www.alimed.com/ball-stabilizer-base.htmlhttps://www.alimed.com/catalogimages/product/31831A.jpgInStock42.75USD/Rehabilitation & Physical Therapy/Exercise/Exercise Balls31831Ball Stabilizer Base Small for 45cm or 55 cm Balls42.7542.75https://www.alimed.com/ball-stabilizer-base.html?pid=94989https://www.alimed.com/catalogimages/product/31831A.jpgInStockSmall31832Ball Stabilizer Base Medium for 65cm or 75cm Balls82.7582.75https://www.alimed.com/ball-stabilizer-base.html?pid=94990https://www.alimed.com/catalogimages/product/31831A.jpgInStockMedium