Airlite superflex G3 panels under the arms for flexibility. Glued and Blindstitched seam construction to keep the water out and has a lycra collar facing for comfort. Also comes with a key loop. Great value entry level suit suitable for all watersports inc swimming. Thickness 3/2mm Seams - Glued Blindstitched Zip - YKK back zip Neoprene - Single lined Solar Mesh and flexible double lined