Durable construction Made from a high-density ABS shell and foam to provide reliable impact resistance for toddlers and children. Designed to keep wearers safe while biking, skating, or scootering, with a comfortable and secure fit. Adjustable fit Features a user-friendly adjustable strap and a dial system for a snug fit. Suitable for head circumferences between 18 and 21 inches, making it ideal for growing kids or as a multi purpose protective accessory. Lightweight design Constructed with lightweight materials to minimize fatigue during extended wear. Your child can play, skate, or ride comfortably without feeling weighed down. Ventilation system Equipped with multiple air vents to keep kids cool and dry, reducing sweat buildup during outdoor activities and enhancing overall comfort in warm weather. Use scenarios - Family bike rides on neighborhood streets or bike paths - Skating at the park or during casual tricks and practice - Riding a scooter to school, errands, or around town Material and performance High-density ABS shell and foam combine for durable protection, while the adjustable fit and ventilation support a secure, comfortable experience across a range of activities.