Problem to be solved. To provide a resealable lid material that has excellent breakability and resealability even after a peeled face is exposed to water vapor. Solution. A resealable lid material 100 has a substrate layer 102, an adhesive layer 104 and a heat seal layer 106 in the stated order, the adhesive layer 104 has thermoplastic elastomer and polyterpene, the heat seal layer 106 has polyolefin resin, and the heat seal layer 106 has a thickness of 1-7 μm.

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