Zone3’s Neoprene Long Sleeve Top is made from Yamamoto Smoothskin neoprene with a 1.5mm thickness which provides a fantastic layer of warmth and insulation. The base layer offers a high level of flexibility and clings to the skin allowing you to have full freedom of movement. The internal smoothskin finish which provides a soft and comfortable fit with a YKK zip which makes it easy to take on and off.