Double 15 Dominoes has professional size color numbered white tiles, and this set has 136 of them, each measuring 1" x 2" x 1/4". The set comes with an interactive hub with loud chicken and train sounds to announce when a train starts. Also included are 8 train markers, starter trains and chickens included. The 6 and 9 numbers are explicitly distinctive to allow for easy identification. For secure storage and while you're on the go, it is packaged in a durable black carrying case.