Cool Runnings: The fabric that uses athlete's SWEAT to activate built-in cooling system and boost performance Mountain Hardwear's range of 'Way2Cool' sportswear is made of Cool.Q.Zero fabric that has built-in sweat-activated cooling agent It was tested on elite athletes in the Grand Canyon to give them an edge in searing temperatures and stop them from overheating The range has arrived in the UK and the company claims it is the fabric designed to lower the overall temperature of the fabric when you sweat Putting off your regular run because it's too hot outside? Well, a new technology might spell the end of your favourite summery excuse to dodge exercise. The UK's first sweat-fuelled sportswear range designed to keep you cool has hit the British high street as temperatures push 30 degrees Celsius. A model wears the UK's first sweat-fuelled runnign top. The range called Way2Cool is from Mountain Hard Wear and prices start at £20 Californian sportswear company, Mountain Hardwear, has developed a range of clothing with elite athletes that it tested in the searing 40 degree heat of the Grand Canyon. The 'Way2Cool' range of sportswear is made of the world's first fabric technology that uses wearers' sweat to activate in-built cooling agents. The Cool.Q.Zero fabric has been developed to give runners and keep-fit junkies a winning edge in hot weather by preventing overheating. The running top (pictured) is made from the world's first fabric technology to use wearer's sweat to activate in-built cooling agents The company claims that running tops with Cool.Q ZERO technology are the 'world's most advanced'. It also said that the clothing range is the industry's 'first active-cooling technology designed to actually lower the overall temperature of the fabric when you sweat.' The technology works due to hundreds of tiny rings embedded in the fabric and uses materials from industrial water filtration processes to ensure that excess moisture is 'sucked' away from the body. The rings, which contain a cooling agent, react to sweat and moisture causing them to suck and swell to create an instant and prolonged cooling effect on the skin. An athlete wears the sportswear on the Grand Canyon Rim 2 Rim hike. It was developed by Mountain Hardwear and tested on elite athletes in searing 40 degree heat to see if the technology really did keep them cool Hundreds of tiny rings are embedded in the fabric They use materials from industrial water filtration processes to ensure excess moisture is 'sucked' away from the body The rings, which contain a cooling agent, react to sweat and moisture causing them to suck and swell to create an instant and prolonged cooling effect on the skin 'Hot weather and heat are incredibly challenging conditions for anyone participating in outdoor activities, especially runners and aerobic athletes,' said Topher Gaylord, president of Mountain Hardwear. Cool.Q ZERO changes that by enabling athletes to run more comfortably in hot conditions. 'It's a no-sweat solution for even the most extreme temperatures.' The range comprises running tops, bandanas and sleeves, which are available from a variety of specialist shops in the UK. Prices start at £20. The company claims that its running top (pictured) with Cool.Q ZERO technology is the 'world's most advanced'.