The Finntrail Thunder is a waterproof shell jacket designed for fishing and outdoor use in demanding weather. Its 2.5-layer fabric uses a TORAY Dermizax membrane rated to 20,000 mm waterproofing and 10,000 g/m²/24 h breathability. A DWR finish, fully taped seams and waterproof zippers improve protection from rain and wind. An adjustable storm hood, zippered underarm ventilation, adjustable cuffs and hem complete a design focused on weather protection and freedom of movement.