Body Core Protection for All Water Sports Offering more body core protection than a standard rash guard, the Thermo Guard is perfect underneath your suit for better heat retention during diving. Thanks to its thermal and UV protection, it's also ideal for snorkeling, surfing, kayaking and for any other water-sports use. • 0.5mm super elastic neoprene with Metalite coating on the inside conducts heat, is easy to put on, and provides UV protection • Flat stitch for comfortable contact on your skin