Broad compatibility across helmets of various shapes. The contoured fit and non-slip positioning improve comfort and stability with ease. Optimal ventilation for long wear. Integrated air-channel layer in the 3D ventilation system promotes effective heat and sweat management for uncompromising comfort during extended use. Hair-friendly support. Innovative pressure-distribution system with an integrated structure helps prevent hair damage, preserving hairstyles and providing long-lasting comfort for natural hair. Helmet integration for versatile riding. Designed for E-bikes, motorcycles, and mountain bikes. Seamlessly integrates into children’s helmets with a curved profile for improved comfort and a secure fit under varying riding conditions. Use scenarios: - Daily rides on an E-bike or mountain bike with children’s helmets during school runs or family outings, where comfort and stability matter over long periods. - Weekend trail rides or off-road sessions where enhanced ventilation helps manage heat and sweat in challenging conditions. - Long-distance rides in warm or humid environments, where hair-friendly support and secure fit contribute to sustained comfort and confidence.