Savic Runner training ball This tool provides your small pet with a fun and active exercise experience. This exercise ball is made of durable material and has a solid construction, ensuring that your pet can enjoy a safe and fun running experience. The smooth surface makes it easy for your rodents to roll and explore its surroundings, while the sturdy design protects your pet from potential dangers. The Runner exercise ball is an easy and practical way to let your pet explore without worrying about its safety. The lightweight construction makes it easy to handle and clean, and it is ideal for indoor training and play. Available sizes Small 12cm Medium 18 cm Large 25cm X Large 32cm