Click or scroll to zoom Tap or pinch to zoom BOSU® Balance Trainer Hand Pump by BOSU Sold out $15.00 SKU B BOSUPMP 1 2 3 4 5 6 7 8 9 10+ Quantity Quantity Sold out The BOSU® Balance Trainer hand pump with dual action is suitable for the Balance Trainer and Ballast Ball. Light and compact.