2mm thickness specifically for warmer waters. Single sealed neckline keeps you warm and toasty. Lightweight Fluidflexâ„¢ neoprene back and chest for panels. Sleeveless construction. Back zip closure with extended pull tab. Seamless lumbar design to increase comfort. Clean O'Neill graphics throughout. 100% nylon bonded to neoprene. Hand wash cold, drip dry in shade. Imported. If you're not fully satisfied with your purchase, you are welcome to return any unworn and unwashed items with tags intact and original packaging included.