PURPOSE: To reduce size to be desirable for package and storage and to simplify constitution by providing a pair of right and left front handles in capable of transfer to either front or rear and by providing a rear handle, in which front end part and a rear end part are connected to each other in a loop state in capable of vertical rotation, at a rear end part of the front handle.

CONSTITUTION: When a pair of right and left front handles 2 and 2 and a rear handle 3 whose front and rear end parts are connected to each other in a loop state are transferred and rotated forward against a running body 1, and then the rear handle 3 is rotated backward, both the handles 2, 2, and 3 can be folded on the running body 1, which becomes compact and desirable for package and storage. Also, as both the right and left rotating parts of the rear handle 3 against the front handles 2 and 2 are not connected to each other with a connecting member but with the rear handle 3 itself, a connecting member becomes unnecessary, which reduces the number of members and simplifies constitution.