O'Neill Wetsuits - O'Neill Coldwater Wetsuit Hood - 3mm :: Men > Wetsuits. Extra warmth with thermo layer interiorAdded protection from the waves with visor and adjustable drawstring faceCrafted from lightweight Fluid foam SL neoprene3mm to regulate body's core temperatureAdded comfort with the wind resistant smooth skin (SL) exteriorExtra support with glued and blindstitch seam constructionUV protection Size: Large.