This long sleeve top is designed for optimal utility and provides exceptional core warmth in cooler conditions. It can also be worn alone as a stylish piece. With AQ-TEC's thermal protection technology, this top offers superior warmth and durability. It features a full-front YKK salt resistant zipper for easy on and off. The long sleeves not only enhance warmth but also provide added abrasion protection during various activities such as surfing, windsurfing, kayaking, free-diving, and scuba diving.