Stability Trainer Green Firm Rebounder Exerciser Balls 2 * PUMP Weight:1 Color:Yellow 2 * PUMP Weight:1 MJM's Exclusive Reinforced Caster System Allows Additional Structural Support To Our Entire Product Line Our Positive Engaging Lock Holds The Wheel Securely So There Is No Swivel Movement When Locked * The Unique Design Allows Easy Movement On Hard Surfaces And Helps Eliminate the Wheel From Falling Into Cracks * Soft Non Marking Tread * (It Will Not Leave Black Marks Or Leave Groves In Wood Or Vinyl) * Quite Mobility * (Hard Treads Make A Lot Of Noise) Non Rust Plastic Body And Wheels * High Load Capacity (160 lbs) * Non Slip Tread * Double The Tread Surface For Superior Breaking * Easy Reach Brake Tab * Replacement Caster 3 * Twin Wheel Casters Have Threaded Stem For Extra Security And Safety 75 Shipping Carton Size: 16 L x 12 W x 5 H *Theraband© Stability Trainer is used to improve motor skills and balance particularly among the elderly and for knee back and ankle rehab * Two foam pads of different densities and one air filled cushion allow users to work through progressive levels by standing on a pad * The green Stability Trainer is firm and provides a beginning level of challenge * The blue Stability Trainer is soft and introduces an increased level of challenge to the user * For maximum challenge use the new extra soft black Stability Trainer Firm Green * 14