- Bump Cap Insert Liner: This insert measures 180 mm in length, 185 mm in width, 105 mm in height, and has a circumference of approximately 60-62 cm, making it compatible with your regular cap or hat. - Lightweight & Comfortable: Crafted from durable PE material, this baseball helmet insert is designed for all-day wear. Its lightweight construction ensures comfort during extended use, even in warm weather. - Enhanced Protection: The bumper cap insert adds an essential layer of safety to your standard headwear, offering protection from bumps and minor impacts in low-risk work settings and outdoor sports activities. - Breathable Design: Featuring multiple ventilation holes and channels, this insert promotes excellent air circulation, helping to keep your head cool and comfortable throughout the day. Use Scenarios: 1. Ideal for outdoor construction sites, this insert enhances safety while allowing you to wear your favorite cap. 2. Perfect for recreational sports like baseball or soccer, it shields your head during gameplay without sacrificing comfort. 3. An excellent companion for gardening or landscaping, providing protection against minor bumps while you work. This bump cap insert liner stands out for its combination of comfort, practicality, and enhanced safety features, making it an essential accessory for various low-risk environments.