The R1 2mm Reversible Long Sleeve Top from Patagonia is a perfect top for warmer water in the 65-75F range. These tops utilize lycra binding at the neck and armholes for a secure fit that molds to your form. They're reversible for a reason, light side for hot weather, dark side for cold weather, pretty ingenious eh?
• 2mm for warmer water
• Made from 88% recycled polyester, 12% nylon
• High stress areas reinforced with 1cm bartacks
• Flatlock seam construction affords increased durability and flexibility