Gear for holding a physiological sensor

A wearable gear (100) for holding a physiological sensor for monitoring a subject, such as a pulse oximeter. Said wearable gear is configured to automatically adjust the maximal length such that the predefined tension is obtained regardless of the size of the body part of the subject. The wearable gear comprises a tensioning element (102) having a maximal length, a holding unit for holding the physiological sensor, the wearable gear further comprises a tension mechanism for tensioning the tensioning element to a predefined tension when at least partially around a body part of the subject, wherein the tension mechanism comprises i) a first part comprising a resilient material, and ii) a second part comprising a non-resilient material, and wherein the first part and the second part mechanically cooperate with each other to automatically adjust the maximal length such that the predefined tension is obtained regardless of the size of the body part. 种用于保持诸如脉搏血氧计的用于监测对象的生理传感器的可穿戴用具(100)。所述可穿戴用具被配置为自动地调节最大长度，使得无论对象的