Mystic Voltage Sweat 4mm Wetsuit Jacket in Black | 2021 The new Mystic Voltage Sweat 4mm Wetsuit Jacket has been made from 4mm neoprene. Ideal for all water sporting and beach going adventures, keeping you warm, dry and snug during, after in in between sessions. The hoodie also features 70% M-Flex for greater freedom of movement, an adjustable hood and an elastic waist strap. Features   M-Flex | 70% Water & Wind Resistant Elastic Waist Strap Spreaderbar Hole Two Waist Pockets