Hypercolor – Change color by temperature


Hypercolor was a line of clothing, mainly T-shirts and shorts, that changed color with heat. They were manufactured by Generra Sportswear Company of Seattle and marketed in the United States as Generra Hypercolor or Generra Hypergrafix and elsewhere as Global Hypercolor.

Substances that can change color due to a change in temperature are called thermochromes. There are two common types of thermochromes: liquid crystals (used in mood rings) and leuco dyes (used in Hypercolor T-shirts).

The color change of Hypercolor shirts is based on combination of two colors: the color of the dyed fabric, which remained constant, and the color of the thermochromic dye. Droplets of the thermochromic dye mixture are enclosed in transparent microcapsules, a few micrometers in diameter, bound to the fibers of the fabric.

At low temperatures, the mixture is a solid. The weak acid forms a colored complex with the leuco dye by causing the lactone ring in the center of the dye molecule to open. At high temperatures, above 24–27 °C, the solvent melts and the ammonium salt dissociates, allowing it to react with the weak acid. This reaction increases the pH, which leads to closing of the lactone ring of the dye to convert it to its colorless (leuco) form.

Therefore, at the low temperature the color of the shirt is the combination of the color of the encapsulated colored dye with the color of the dyed fabric, while at higher temperatures the capsules become colorless and the color of the fabric prevails.

Hyperice Venom Back

Loosen up and help relieve pain with this Hyperice Venom Back wearable device. Featuring four 1-inch vibration pods and advanced heating technology, this wearable device helps relax your muscles and relieve stress. This Hyperice Venom Back wearable device has a digital touch screen that lets you make precise adjustments to temperature and vibration settings.portable heat and vibration device cutting-edge, digitally connected, wearable back device uses heat and vibration to warm up, loosen, and relax sore and stiff muscles.

Digital touch screen

Allows you to customize the temperature, vibration pattern, and time to your preference.

Use it anywhere

Relax at home, at work, before and after a massage treatment or physical activity. TSA-approved as a carry-on.

Plush neoprene wrap

Lets you adjust the fit to your liking.

Heats within 90 seconds

Four 1″ vibration pods feature three different vibration settings.

Smart Heat Jacket

  • ★【Health Care Heated Jacket】- The ARRIS women`s heating vest can help promote blood circulation, relief pain of muscles. Perfect for outdoor activities like snowmobile, motorcycling, mountain climbing, camping, hiking, skiing, Fishing, Hunting or office routine and business use during fall and winter months.★【Safety】- Built-in thermal protection module. Once it is overheat, it would stop until the heat return to the standard temperature. Support Hand/ Machine wash. We know you will be impressed with our product and quality service, but if you have any questions or concerns, please contact us immediately as we offer a 30-day money back.