Abstract: A distribution and supply joint for distributing and supplying a fluid includes a joint body including at least a first inlet port, a second inlet port, a first outlet port, a second outlet port, and a third outlet port. The joint body includes therein a distribution flow path allowing the first inlet port to communicate with the first outlet port and the second outlet port, and a tunnel section provided in a portion of a flow path extending from the second inlet port to the third outlet port.

Abstract: An air bladder for use in a vehicle seat includes an air chamber, a sheet member, a communication hole, and at least one guide portion. The air chamber is configured to be filled with air. The sheet member separates the air chamber from an exterior. The communication hole is formed in a central portion of the sheet member and allows communication between the air chamber and the exterior. The at least one guide portion is located adjacent to an air chamber side of the sheet member. The at least one guide portion is configured to guide air that flows into the air chamber from the communication hole toward a corner portion of the air chamber.