Just like a roly-poly it won't fall down, because the shape of the base and the base weight make sure that it's always upright. Roly-poly cup,non-spill cup,untippable drinking cup,double-ear cup,tumbler cup. Just like a roly-poly it won't fall down, because the shape of the base and the base weight make sure that it's always upright.Colors will be changed to what the customer want. Roly-poly Cup