Anyone who has experienced ‘brain-freeze’ when swimming in cold water will know how valuable triathlon skull caps can be to get you going! The Neoprene Swim Cap from Zone3 provides warmth while maintaining good hydrodynamics through the water. The design is focused on making this cap the best fit possible, with a Velcro strap under the chin to cater for different head sizes.Product Information:• Product Code: NA18UNSC116-BK/SI• Velcro strap under chin.• High quality 4mm Yamamoto Smoothskin material.• Part of a neoprene accessory range designed for year-round training.• Accommodates a wide variety of head sizes.• Increased comfort and warmth.• Low drag hydrodynamic design.