The Preston Thermatech Heated Softshell Jacket from Preston Innovations is designed to keep anglers warm in freezing winter conditions. It incorporates five heated elements, positioned to warm the areas that need it most, and these can be adjusted using a simple temperature control button. Four settings let you match the heat output to the conditions on the day. The jacket is compatible with a USB-C connector, and it is recommended that a power bank with a 40W output is used for maximum performance. - Low Blue – 8hrs - Medium Green – 7hrs - High Purple – 6hrs - Very high Red – 5hrs Heating times are based on a Preston Thermatech Power Bank – 20000mAh. Note that heating times can vary depending on the age and performance of the power bank. Power bank not included.