To provide a mask capable of achieving preferable balance between fitting feeling and pressure sense, achieving thermal sense over a wide range with equal warming feeling.SOLUTION: A thermal sense tool 50 comprises a mask body part 51 for covering both eyes of a user, a heat generator 100 provided on the body part, and ear hook parts 52L, 52R each of which is jointed to one of both end parts of the body part in a longitudinal direction and holds the body part to cover each eye of both eyes of a wearer, and satisfies the following conditions: (i) the ear hook part each has a hole 54 for ear hook, and when a maximum length of the hole is La, and a length from an end part of one hole on the body part to an end part of the other hole on the body part side is Lb, (La×2+Lb)<；285； (ii) a stress when the body part is extended by 4 cm in the longitudinal direction is less than 70 N； and (iii) a stress change ratio in the La direction of the ear hook part expressed by the following formula is 35% or greater, the stress change ratio(%)={(100% stress in extension (N))-(10% stress in return extension (N))/100% stress in extension (N)}×100.SELECTED DRAWING: Figure 1【課題】フィット感と圧迫感との良好なバランスが得られ、広い範囲において温感を感じられ、均一な温まり感が得られるマスクを提供する。【解決手段】温熱具５０は、両目を覆うマスク本体部５１と本体部に設けられた発熱体１００と本体部の長手方向両端部にそれぞれ接合され、本体部により着用者の両目を覆うように保持する耳掛部５２Ｌ、５２Ｒとを備え、以下の条件を満たす。（ｉ）耳掛部が耳掛け用の孔５４を有し、孔の最大長さをＬａとし、一方の孔の本体部側の端部から、他方の孔の本体部側の端部までの長さをＬｂとしたとき、（Ｌａ×２＋Ｌｂ）＜２８５であり、（ｉｉ）本体部を長手方向に４ｃｍ伸長したときの応力が７０Ｎ未満であり、（ｉｉｉ）以下の式で表される、耳掛部のＬａ方向における応力変化率が３５％以上である。応力変化率（％）＝｛〔１００％伸長時応力（Ｎ）〕―〔１０％戻り伸長時応力（Ｎ）〕／１００％伸長時応力（Ｎ）｝×１００【選択図】図１
