Features: 1) Material: synthetic rubber 2) Sizes: 3.5", 4", 5", 6", 7", 8", 9", 10" 3) We can pri Features:1) Material: synthetic rubber2) Sizes: 3.5", 4", 5", 6", 7", 8", 9", 10"3) We can print your logos on the surfaces for premium and promotion gifts4) Safe for children