The Togu Jacaranda Ball: For a stable core. The Togu Jacaranda Ball is made from high-quality and durable Ruton. Inside the ball are twelve stainless steel balls and air. By performing flowing and circular movements, the fitness trainer is set in motion while keeping the core stable. Jacaranda is a large tree with sprawling branches. By extending the arm, the branch is mimicked, and the core that needs stabilization is the trunk. Weighing approximately 400 g and featuring freely movable stainless steel balls (12 pieces) inside, training with the Jacaranda Ball is particularly gentle on the joints while also stimulating the body's senses. Product details: Diameter: 14 cm, Material: Ruton with stainless steel ball, Weight: 0.4 kg, Product type: Balls.