The Bosu Balance Ball is a 26" exercise trainer designed for home gym workouts. Made of durable plastic and rubber materials, this balance ball by BOSU is ideal for gym and training activities. The blue color adds a pop of color to your fitness routine, making it a versatile and fun addition to your fitness equipment and gear collection. Ideal for achieving balance, stability, and strength in your workouts, the Bosu Balance Ball is a great tool for fitness enthusiasts looking to improve their overall fitness levels.