Why you need this helmet liner Stops sweat from running into your eyes so you can focus on the task or sport. Reduces odor, itch and skin irritation under helmets and hard hats. Ideal for anyone who sweats a lot or wears a helmet for long periods. Key benefits Moisturewicking and breathable: pulls sweat away from skin and lets heat escape. Lowprofile design: worn under helmets and hard hats without affecting fit. Skin protection: creates a barrier between your skin and helmet interior to reduce rubbing and discomfort. Comfortable fit for extended wear. Where it works Construction and trades: wear under a hard hat to control sweat and reduce irritation on the job. Cycling, motorcycling and team sports: keeps sweat out of eyes and helps maintain focus during training and competition. Gym, running and outdoor activities: use alone or under a helmet for added moisture control. Who it's for Athletes, heavy sweaters and people who do physically demanding work. Men and women — suitable for indoor and outdoor activities. Product details Function: moisturewicking helmet liner that soaks up sweat and keeps it away from the face. Compatibility: designed specifically to be worn under helmets and hard hats. Performance: breathable construction to help reduce smell and itch while protecting the skin. Gift note Practical, useful and easy to pack — a straightforward choice for friends or family who wear helmets or sweat heavily.