This 2mm outer zip through is made using our super stretch neoprene, giving the rider the dual security of stopping the wind factor completely while also helping maintain body temperature when riding on colder days. It has multiple internal pockets so you can keep your secrets on you at all times while the Lycra hand sleeves keep the jacket from pushing up your arms. The contrast hood is fully secured to stop flapping. Question: Does your steeze have to stop in winter? Answer: Nope.