The Bauer 5100 Hockey Helmet offers a great balance between performance and value. The 5100 utilizes the same shell design as the 9500 offering highend protection and additional air vents from classic Bauer helmet designs. Triple density foams offer increased protection and comfort compared to single VN liners. Gameday Protection: Triple-density foam liner - Consist of VN and Hx-Sorb foams. Provides a combination of protection and comfort. Hx-Sorb foam - The blue colored foam, as seen in the image, is perforated shock absorption padding that provides additional protection while still allowing for optimal air flow. Ergo translucent ear covers. Customized Fit: Bio-Mechanical Shell: The Dual-density HDPE shell combinesboth protective and flexible material for a personalized fit. Allowsthe helmet to self-adjust to the vast head shapes in the game. Tool-Free Adjustment-Side Bauer clips flip up allowing the player to expand or contrast the helmet size without tools. Comfort:Floating pro ear loops. Ventilation ports - Allows for air to travel through thehelmet cooling the temperature inside the helmet.