Medical apparel for use in medical examination and treatment, namely, soft insulative helmet liners being headwear that incorporates head heating or head cooling to aid in maintaining a user's core body temperature; Medical apparel for use in medical examination and treatment, namely, soft headwear that both aids in maintaining a user's core body temperature at a euthermic range; Medical apparel for use in medical examination and treatment, namely, insulative soft headwear; soft headwear and disposable headwear that both aids in maintaining a user's core body temperature at an euthermic range and provides biometric data and data telemetry.; helmet liners being headwear.; helmet liners being headwear; Medical devices and apparatus in the nature of thermal regulating head covers used for maintaining a user's core body temperature within an euthermic range, incorporating and supporting wearable biometric sensors for monitoring human body vital signs, remote electronic devices for monitoring body temperature, electrocardiogram (ECG), respiratory rate (RR), End Tidal Carbon Dioxide (ETCO2), heart rate (HR), oxygen saturation (SpO2), photoplethysmography (PPG), blood glucose (BG), carbon monoxide level (SpCO), blood pressure (BP), and hydration levels (HL) and containing biometric sensors for monitoring human body vital signs and geographic location of a patient wearing or carrying the device to facilitate the administration of remote medical services in the fields of healthcare, emergency medical services, telehealth, telemedicine, teleconferences, and remote healthcare; Medical apparel for use in medical examination and treatment, namely, insulative soft headwear that both aids in maintaining a user's core body temperature at an euthermic range during consumer hiking, camping, and outdoor uses; surgical caps; soft insulative helmet liners being headwear that incorporates head heating or head cooling to aid in maintaining a user's core body temperature; Insulative soft head ware that both aids in maintaining a user's core body temperature at an euthermic range during consumer hiking, camping, and outdoor uses; Insulative soft headwear that both aids in maintaining a user's core body temperature at an euthermic range during consumer hiking, camping, and outdoor uses; Think tank services in the nature of consultation services IN THE FIELD OF TECHNOLOGY AND SCIENCE; soft headwear and disposable headwear that aids in providing biometric data and data telemetry; Medical apparel in the nature of headwear for use in medical examination and treatment; soft headwear that both aids in maintaining a user's core body temperature at an euthermic range; Think tank services in the nature of consultation services IN THE FIELD OF MEDICINE, WELLNESS AND HEALTHCARE; headwear; soft headwear and disposable headwear that aids in maintaining a user's core body temperature at an euthermic range; soft insulative helmet liners being head ware that incorporates head heating or head cooling to aid in maintaining a user's core body temperature; Medical apparel for use in medical examination and treatment, namely, helmet liners being headwear