Neoprene Thermal Hood — 5mm neoprene diving hat designed to protect your head and ears during coldwater swimming. Key benefits Thermal protection: 5mm thick neoprene reduces heat loss and helps keep your head warm in cold water. Ear protection: Integrated, adjustable ear caps shield ears from cold and reduce discomfort during prolonged swims. Secure, comfortable fit: Flexible neoprene and adjustable features accommodate a wide range of adult head sizes. Unisex and lowprofile: Solid color design suitable for both men and women; compatible with typical swim and dive gear. Durable and flexible: Thick neoprene construction balances insulation with mobility for swimming and diving movements. Product highlights (function, compatibility, size, material, performance) Material: 5mm neoprene for reliable thermal insulation. Fit: Adjustable ear caps and stretchable neoprene that conforms to most adult head sizes. Use: Designed specifically for winter coldproof swimming and other coldwater activities. Performance: Protects head and ears from cold water and wind, making swims more comfortable and longer sessions more practical. Practical use scenarios Openwater winter swims: Keeps your head and ears insulated during swims in lakes, rivers, or the ocean in cold conditions. Coldweather swim training: Provides consistent warmth for adults and professional swimmers training outdoors or in unheated pools. Coldwater diving or snorkeling: Adds thermal protection for surface intervals and short dives where maintaining head warmth matters. Who should use it Adult swimmers (men and women) who swim in cold weather or need added head and ear protection. Professional or frequent swimmers seeking reliable thermal protection without sacrificing mobility. Care and fit notes Stretch neoprene offers a snug, adjustable fit; confirm comfort before extended use. Solid color, unisex design fits smoothly under or with most swim accessories. A practical, nononsense thermal hood for adults who need dependable head and ear protection during coldwater swimming.