Xcel Kid's Axis Flatlock Back Zip Full Wetsuit 3/2mm Ideal comfort and warmth . If you're looking for enhanced warmth and stretch, the Axis series is the wetsuit for you. This Axis 3/2mm fullsuit has an engineered fit that features 100% high-performance stretch neoprene, comfortable flatlock seams and an easy access back zip. Made of eco-friendly limestone neoprene with an aqua glue process.