CONNECTION STRUCTURE OF DRAIN MATERIALS

PROBLEM TO BE SOLVED: To provide a connection structure of drain materials, capable of suppressing the decline of flexibility and the formation of a level difference in a connection part and keeping the drainage function of the drain materials.SOLUTION: The connection structure of the drain materials of this invention includes a flexible and water permeable sleeve 6 to which the end part 10 of a belt-like first drain material 1 and the end part 30 of a second drain material 3 are inserted so as to be abutted, and which is fixed to the first drain material 1 and the second drain material 3. The sleeve 6 may include one or more flexible planar member(s) 5 thinner than the first drain material 1 and the second drain material 3.