A heating tool (1) is provided with: an air-permeable first sheet (11)； a second sheet (12)； a heat generating layer (13) that is interposed between the first sheet (11) and the second sheet (12)； and a medication layer (16) that is interposed between the heat generating layer (13) and the second sheet (12), the heating tool being configured such that the air permeability from the heat generating layer (13) to the first sheet (11) is higher than that from the heat generating layer (13) to the second sheet (12). The medication layer (16) comprises a medication composition including a cooling sensation agent and a solvent having a molecular weight of at most 1,000, and the volatilization amount of the cooling sensation agent after initiation of heat generation in the heat generating layer (13) is 1-5 mg/2 hours.溫熱器具(1)具備具有透氣性之第一片材(11)、第二片材(12)、配置於第一片材(11)及第二片材(12)之間之發熱層(13)、及配置於發熱層(13)及第二片材(12)之間之藥劑層(16)，且以發熱層(13)至第一片材(11)之透氣性高於發熱層(13)至第二片材(12)之透氣性之方式構成，藥劑層(16)包含含有冷感劑及分子量為1,000以下之溶劑之藥劑組合物，發熱層(13)之發熱開始後之冷感劑之揮散量為1 mg/2小時以上且5 mg/2小時以下。
