1. Warmth Protection: Our 3mm neoprene diving hood keeps your head warm and comfortable, prevents rashes, and provides protection. You can enjoy wonderful moments without any concerns. Additionally, this swim cap also keeps your head warm when you're paddleboarding in cool water. It fits snugly and dries quickly, making it perfect for all water sports. 2. Sun Protection: This diving cap has excellent UV protection, shielding you from harmful sunlight while enjoying water activities. It also protects your head from sea lice, jellyfish, coral, etc. 3. Adjustable Design: The swim cap comes with an adjustable chin strap and a double - locking mechanism of hook and loop fasteners, ensuring that the hook and loop of the chin strap are firmly fixed. This adjustable diving cap is one - size - fits - all and suitable for both men and women. Moreover, it's easy to tear open, facilitating quick donning and removal. 4. All - round Protection: Whether you're surfing, diving, swimming in open water, scuba diving, water skiing, canoeing, kayaking, doing board sports, or sailing, this neoprene diving hood ensures that your head is completely protected from cold winds, cold water, jellyfish, or sharp rocks.