Paramount in utility, this long sleeve top provides outstanding core warmth in cooler conditions or a great piece to be worn alone. Using AQ-TEC's thermal technology in warmth, protection and durability, this long sleeved top comes with a full-front YKK salt resistant zipper for easy donning and doffing. The long sleeves increase both warmth and abrasion protection from any activity's natural bumps and scrapes. This piece excellent for surfers, windsurfing, kayaking, free-diving and scuba diving.