Regular Fit: This garment is true to size for an easy, comfortable fit. Meet the midlayer that works as hard as you do. The Ventrix Hooded Jacket features are adaptable Ventrix technology that harnesses perforations in key zones that open with movement, allowing excess heat and perspiration to escape, while remaining closed in times of rest to retain heat. Add in the stretch fabrication for freedom of movement and you have the ideal hiking companion for cooler treks.