To allow rollers to certainly and stably contact with a walking surface or a travel surface over the whole width, in any of a walking mode and a skating mode, in a roller skate wherein the walking mode and the skating mode can be changed over.

A first roller skate is disposed with the plurality of rollers 13 along the long direction of a shoe sole 12. Frictional contact members 21 are adjacently provided along the rollers 13. The roller 13 and the shoe sole 12 is hinge-connected 17, 18 such that they can swing right and left relatively to each other. A second roller skate is disposed with the plurality of rollers 13 along the long direction of the shoe sole 12. Frictional contact members 21 are adjacently disposed along the roller 13. The frictional contact member 21 has a case 31 and a contact 32. The contact 32 can project from the case 31 downward, and can recede into the case 31 upward.