This is the Akona Unisex Skin Suit Front Zip UV Protective Dive Suit     

Features:

• 2nd layer of thermal protection under your wetsuit
• Assists in donning your 3, 5, or 7mm suit. No more neoprene sticking to your skin.
• UV protection (SPF50)
• Defend against sea lice, jellies, and other irritants
• Form fitting to reduce drag
• Full-front zipper closure
• Thumb loops and stirrups prevent suit riding up when worn under a wetsuit

The Akona Unisex Front Zipper Skin Suit provides warm or cold-water protections. A wetsuit works when a thin layer of water is trapped between the wetsuit and the skin. The body temperature of the diver heats this water creating a nice insulation from the colder surrounding water. A properly fitting wetsuit directly relates to the effectiveness of the insulation. Your wetsuit should fit snug and still allow a full range of motion.