Five mannequins weighing 25-stone each and costing £21,600 have been bought by Lincolnshire fire brigade in order to practice rescuing obese people.
The incredibly heavy bariatric models - named 'Barry' - are designed to be assembled and de-assembled into 15 pieces.
The torso alone weighs the same as a packed suitcase.
The dummies cost £4,320 which includes a roll cage on wheels and clothing and accessories.
Lincolnshire Fire & Rescue can use the models to practice rescuing obese people in scenarios including: car crashes, when people get stuck in armchairs or fall off toilets onto floors in confined spaces.
Firefighters already assist in transporting bariatric patients.
Chris Jarratt, managing director of supplier Bariquins and a former police officer, said the mannequins enable the emergency services to learn to lift obese casualties while reducing the risk of injuring themselves.
He said told Lincolnshire Live: "After I'd left the police I found myself in a situation where I nearly had to give first aid to a 28 stone man who was struggling to beathe.
"That make me think how do the emergency services train for this?
"The Lincolnshire fire officers practice rescuing obese people with new mannequins have just come to market this year and already we are supplying Lincolnshire Fire & Rescue and there's also interest from the NHS".
In 2015/16 the county fire service attended 37 incidents where they helped ambulance crews with obese patients, compared to 16 in 2014 /2015. There were only four rescues of obese people carried out in 2011/12.
All of East Midlands Ambulance Service's ambulances have stretchers that can carry people who weigh up to 30 stone.
Andy Ford, technical response manager at Lincolnshire Fire and Rescue, said: "Our primary objective is to protect lives, prevent injuries and minimise the community impact from emergency incidents.
"To do that efficiently and effectively, we make sure our crews have the skills and equipment necessary to respond to a range of different emergencies".