When the water and weather call for a touch more warmth than a rash guard, but you'd prefer not to wear a full spring wetsuit, the Patagonia R1 Long Sleeve Top paired with shorts or a swimsuit bottom are the perfect combo. Stretchy 1.5 mm neoprene in a form-fitting anatomical cut, combined with raglan sleeves and underarm gussets for freedom of movement while paddling give you a great fit. The R1 Long Sleeve Top is finished with 1 cm bartacks, strategically placed glue dots, and Melcro® reinforcing for superior durability.