Vitos Fitness Toning Soft Weighted Mini Ball | Medicine Ball for Core Training Yoga Exercise $16.90 – $34.99 Make sure this fits by entering your model number. BUILD STRENGTH – The weight toning ball is utilized in performing pilates, fitness, strength, yoga and in rehabilitation in replacement of dumbbells. While holding a heavy ball help build up your arm strength, your effort to keep it from rolling down will increase your coordination. MOST COMFORTABLE DESIGN FOR ANYONE – This medicine ball is designed with a proportion of fitting your palm: conveniently small, easy to grab, made of durable soft PVC shell, interior natural sand ensuring healthy state for users.