Aimed at menopause relief, the device invented by Offaly native Aonghus O’Donovan, targets a growing market for non-medical women’s health technology.
An Irish engineer is at the centre of a ‘revolutionary’ cooling bracelet to help women manage the debilitating hot flushes of menopause.
The MyCelsius bracelet, worn like a wrist watch, enters the Irish market today (7 April 2026) and has been co-developed by Offaly native Aonghus O’Donovan.
It works by cooling users’ wrists by 10°C in under 10 seconds and is designed to dramatically reduce the discomfort of hot flushes.
Co-founders O’Donovan, 33, and Maxime Kryvian 37, the CEO of the start-up cooling tech company, say it has an 80% efficacy rate for women experiencing one of the most uncomfortable perimenopause and menopause symptoms.
Cool Irish tech
Offaly native Aonghus O’Donovan spent three years researching the cooling bracelet, which lowers local skin temperature, helping the entire body feel cooler in moments of sudden heat.
The MyCelsius bracelet is a non-medical device and represents the culmination of three years of research and development.
The cooling system is claimed by O’Donovan to be five times more powerful than competitors’ devices.
“The wrist is one of the most thermally sensitive parts of your body and applying cold to it sends a signal to the hypothalamus (the body’s thermostat), to stop the sweating and flushing associated with a hot flush,” O’Donovan explained.
“It uses advanced thermo-electric cooling to create a soothing, cold sensation directly onto the wrist.
“By lowering local skin temperature, it helps the full body feel cooler in moments of sudden heat.”
It also works to counteract uncomfortable heat caused by hormonal changes or stress and anxiety.
Research in recent years has shown that almost four in 10 women in Ireland have considered quitting their jobs due to menopause symptoms.
Based in Bristol, England, O’Donovan studied Mechanical Engineering at the University of Limerick (UL), which included a year in New York designing heating, ventilation and air conditioning systems for skyscrapers.
He went on to work at Dyson before moving into Formula 1 and Aerospace engineering and has since applied design and thermodynamics principles to women’s health — working closely with hundreds of women to develop MyCelsius.
The bracelet has five different modes, including a night-time setting to prevent heat-induced sleep disruption.
MyCelsius worked with a community of women that have been integral to shaping the product’s look, feel and functionality.
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