More than 25% of body heat is lost through the head and extremities of the body. The hood design provides the best insulation and protection for cold dives and activities. It can even be worn under a conventional neoprene hood for extra warmth, and is flexible enough to slide off if required and still be comfortable.nMore than 25% of Body-Heat is Lost through the Head and Extremities of the Body. The Sharkskin Chill-Proof Hood by BARE is design provide the Best-Insulation and Protection for Cold Dives and Water Sport Activities. It can even be Worn-Under-a-Conventional Neoprene Hood as Layering for Extra Warmth. The Chill-Proof Hoods Slick Fabric also makes Donning-the-Stiffest-Neoprene-Hood Easy and prevents Hair from being pulled. When Worn as a Standalone the Hood Protects-Against Chaffing from Mask Straps, keeps your Head and Ears Toasty Warm, and is Flexible-Enough to Slide-Off if required, while still Remaining-Comfortable. Sharkskin Chill-Proof Material is an Aquatic Specific, Windproof 3-Layer Composite Material that has been developed for Water Sports Athletes. The Comfortable Micro Fleece' Layer is Next-to-the-Skin and Wicks' Moisture and Sweat Away from the Body to help Keep-you-Dry. The Second Middle Technical' Layer is 100% Windproof yet Breathes to Regulate-Body-Temperature while Stopping-Wind-Chill. The Third Outer Layer is a Nylon/Lycra Blend for Abrasion Resistance and 4-Way-Stretch. It is also UV Resistant for Sun Protection and has a Durable Water Repellent Finish (DWR) to provide a Protective Shell that Sheds' Water. Sharkskin Chill-Proof is Neutrally Buoyant, Anti-Microbial, Odor Resistant, Itch Resistant and Machine Washable. The Hood is available in Multiple Sizes, is Black in Color and is covered by a 12 month limited warranty.