Soak the All For Paws Chill Out Ice Ball in water and once water has been absorbed, place in freezer. Once frozen this toy will allow hours of cool play for your pooch. Ideal for play on hot summer days. The cool gel inside the bone keeps the absorbed water colder for longer periods, keeping your dog cool and satisfied. Cool gel inside the All For Paws Chill Out Ice Ball is safe and non toxic. Available in Small (6.3cm diameter) and Large (9cm diameter) sizes.