Head On The Winter Commute In Style With The Volter Parka. This Men’s Parka Jacket Comes With A Water-repellent Finish, Taped Seems And Insulation, All Whilst Having A Great Breathability Rating To Keep You Fresh. When The Temperature Drops, Activate The Battery Powered Heating System For Instant Warmth.A 5v Usb Powerbank With A Minimum Output Of 2.1a Is Required To Utilise The Heated Technology With This Jacket. Regatta Cannot Be Held Responsible For Batteries Not Purchased Directly From Us. Battery Pack Sold Separately.