The Arsenal Thermo R Vent Stadium Jacket designed in blue with red detail. Using the brand new thermo regulation system from Puma, this Arsenal Jacket will keep your body temparute optimised in all climates. When wearing the jacket during exercise, the vents will open with your motion to let cool air in and warm air out. This new system will regulate your body temprature and allow you to train harder. The new Thermo R Vent system also keeps your body warm when static. The vents will detect the limited motion and close up to keep the cool air out and retain the warm air keeping your body at the optimised temparature. Keeping your body regulated in colder seasons is important when exercising, and this Arsenal Stadium Jacket is leading in the industry. New vent technology to regulate body temperatureCool air in, warm air outVents open with motion of body Product code: M75073801