(Techniche International) The absolute ideal vest to keep you warm while riding without the bulk! Originally used in the motorcycle industry, this awesome vest will help keep equine riders everywhere warm for fall, winter and spring riding. Has 3 levels of settings: Lo maintains a 104 degree temp for 9 hours. Medium maintains a 122 degree temp for 6 hours. Hi maintains a 140 degree temp for 4 hours. Temperature controller goes in chest pocket.